CN105933398A - Access request forwarding method and system in content distribution network - Google Patents
Access request forwarding method and system in content distribution network Download PDFInfo
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- CN105933398A CN105933398A CN201610239293.8A CN201610239293A CN105933398A CN 105933398 A CN105933398 A CN 105933398A CN 201610239293 A CN201610239293 A CN 201610239293A CN 105933398 A CN105933398 A CN 105933398A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/60—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources
- H04L67/63—Routing a service request depending on the request content or context
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/74—Address processing for routing
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- Computer Networks & Wireless Communication (AREA)
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- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The invention provides an access request forwarding method and system in a content distribution network. The method comprises the steps: analyzing a received access request so as to determine the access information carried by the access request; judging whether a current CDN node is a target SDN node or not according to the access information: enabling the current CDN node to respond to the access request if the current CDN node is the target node, or else, transmitting the access request to a next CDN node. After the method and system receive the access request, the received access request is analyzed so as to determine the access information carried by the access request, and then judge whether the current CDN node is the target node or not according to the obtained access information, thereby achieving a purpose of quickly and reliably verifying whether the current CDN node is the target CDN node or not, speeding up the response to the access request of a user, improving the quality of services provided for the user, and guaranteeing the user experience.
Description
Technical field
It relates to Internet technical field, particularly to the access request in a kind of content distributing network
Retransmission method and system.
Background technology
CDN (Content Delivery Network, content distributing network) is a kind of by each at network
On existing Internet basic one layer of intelligent virtual network that node server is constituted is placed at place.
CDN can in real time according to network traffics and the connection of each node, load state and to user away from
From with integrated informations such as response times, the request of user is re-directed on the service node that user is nearest,
Its objective is to select the content needed for user sends user of the node from user's relative close, alleviate
The situation of network congestion, improves the response speed of website.
In prior art, user accesses the node of the relative close determined to be needed to pass through intermediate node often
Forwarding realize, and the access request of user each time will through a new intermediate node
Think whether inquiry present node in control centre's is the CDN node storing and having accessed content, the most not only
Extend the response speed to client's access request, and send in the case of network condition is bad to adjusting
The result that the inquiry request at degree center or control centre return can not may be back to because of packet loss work as
Front CDN node, thus Consumer's Experience is caused ill effect, the most how to provide a kind of the most steady
Fixed retransmission method is to ensure that a CDN accesses whether really be able to play alleviation network congestion, improves
The key of websites response speed, thus provide the user the service of optimum, promote Consumer's Experience.
Summary of the invention
The disclosure provides the access request retransmission method in a kind of content distributing network and system, to solve
Above-mentioned technical problem.
According to an aspect of this disclosure, it is provided that the access request forwarding side in a kind of content distributing network
Method, including:
Resolve the access request received to determine access information entrained in described access request；
According to described access information judge current CDN node whether as target CDN node, the most then
Described current CDN node responds described access request；
If it is not, then described access request is forwarded to next CDN node.
According to another aspect of the disclosure, it is provided that the access request in a kind of content distributing network forwards system
System, including:
Access request parsing module, for resolving the access request received to determine in described access request
Entrained access information；
Destination node determines module, for judging that current CDN node is whether as mesh according to described access information
Mark CDN node；
Access request respond module, for when described current CDN node is target CDN node, rings
Should described access request；
Access request forwarding module, is used for when described current CDN node is not target CDN node,
Forward described access request to next CDN node.
Access request retransmission method in the content distributing network of disclosure embodiment and system, receiving
After access request, resolve the access request that receives to determine access information entrained in this access request,
Then judge whether current CDN node is target CDN node according to the access information obtained, thus
Achieve rapidly and reliably verify that whether current CDN node is the purpose of target CDN node, accelerate
Response speed to user access request, improves the quality of the service provided the user, it is ensured that use
Family is experienced.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of disclosure embodiment, institute in embodiment being described below
The accompanying drawing used is needed to be briefly described, it should be apparent that, the accompanying drawing in describing below is the disclosure
Some embodiments, for those of ordinary skill in the art, in the premise not paying creative work
Under, it is also possible to other accompanying drawing is obtained according to these accompanying drawings.
Fig. 1 is the flow process of an embodiment of the access request retransmission method in content of this disclosure distribution network
Figure；
Fig. 2 is the stream of another embodiment of the access request retransmission method in content of this disclosure distribution network
Cheng Tu；
Fig. 3 is the stream of the another embodiment of the access request retransmission method in content of this disclosure distribution network
Cheng Tu；
Fig. 4 is the signal of an embodiment of the access request repeater system in content of this disclosure distribution network
Figure；
Fig. 5 is showing of another embodiment of the access request repeater system in content of this disclosure distribution network
It is intended to.
Specific embodiment
For making the purpose of disclosure embodiment, technical scheme and advantage clearer, below in conjunction with these public affairs
Open the accompanying drawing in embodiment, the technical scheme in disclosure embodiment be clearly and completely described,
Obviously, described embodiment is a part of embodiment of the disclosure rather than whole embodiments.Based on
Embodiment in the disclosure, those of ordinary skill in the art are obtained under not making creative work premise
The every other embodiment obtained, broadly falls into the scope of disclosure protection.
It should be noted that in the case of not conflicting, the embodiment in the application and the spy in embodiment
Levy and can be mutually combined.
The disclosure can be used in numerous general or special purpose computing system environment or configuration.Such as: Ge Renji
Calculation machine, server computer, handheld device or portable set, laptop device, multicomputer system,
System based on microprocessor, set top box, programmable consumer-elcetronics devices, network PC, small-sized calculating
Machine, mainframe computer, the distributed computing environment including any of the above system or equipment etc..
The disclosure can described in the general context of computer executable instructions,
Such as program module.Usually, program module includes performing particular task or realizing specific abstract data class
The routine of type, program, object, assembly, data structure etc..Can also be in a distributed computing environment
Put into practice the disclosure, in these distributed computing environment, by by communication network connected remotely
Reason equipment performs task.In a distributed computing environment, program module may be located at and includes storage device
In interior local and remote computer-readable storage medium.
Finally, in addition it is also necessary to explanation, in this article, the relational terms of such as first and second or the like
It is used merely to separate an entity or operation with another entity or operating space, and not necessarily requires
Or imply relation or the order that there is any this reality between these entities or operation.And, art
Language " includes ", " comprising ", not only include those key elements, but also other including being not expressly set out wanted
Element, or also include the key element intrinsic for this process, method, article or equipment.Do not having
In the case of more restrictions, statement " including ... " key element limited, it is not excluded that including described wanting
Process, method, article or the equipment of element there is also other identical element.
As it is shown in figure 1, the access request retransmission method in the content distributing network of an embodiment of the disclosure,
Including:
The access request that S11, parsing receive is to determine access information entrained in described access request；
S12, judge according to described access information current CDN node whether as target CDN node, if
It is that the most described current CDN node responds described access request；
S13 is if it is not, be then forwarded to next CDN node by described access request.
In this enforcement, after receiving access request, resolve the access request received to determine this access
According to the access information obtained, access information entrained in request, then judges that current CDN node is
It is no for target CDN node, it is achieved thereby that whether the current CDN node of checking rapidly and reliably is mesh
The purpose of mark CDN node, accelerates the response speed to user access request, improves and provide the user
The quality of service, it is ensured that Consumer's Experience.
As in figure 2 it is shown, the access request forwarding side in the content distributing network of an embodiment of the disclosure
In method, access request is TCP access request, and access information at least includes accessing content information and accessing road
By table；Access content information to be used for judging whether current CDN node has stored corresponding to accessing content information
File, access routing table be used for determining next CDN node.
Wherein, described access request is forwarded to next CDN node include:
S21, read the IP address of next CDN node from described access routing table；
S22, the IP address of next CDN node described is deleted from described access routing table；
S23, according to the IP address of next CDN node described described access request is forwarded to described next
CDN node.
In the present embodiment, by reading behind the IP address of next CDN node that will be forwarded to the most immediately
Delete when the method for this IP address makes to forward each time new access request and can directly read routing table
In first IP address, and need not carry out unnecessary calculating and compare (if in repeating process,
From start to finish routing table does not the most change, when reading next CDN node the most each time all must by calculate from
Whole routing table reads the IP address of next CDN node described, for example, it is desired to record reads next time
From the beginning of the n-th byte, so should count and calculate again, cause the waste of room and time), and lead to
The process crossing the present embodiment has only to order reading from the gauge outfit of routing table when turning to next CDN node
Take first IP address, not only save time and space, it is thus also avoided that can owing to calculating and counting
The mistake that can bring, such as, jump directly to farther node or jump back to a node etc..
As it is shown on figure 3, the TCP access request in above-described embodiment is generated by following steps:
From the access content information of the access request of client, S31, basis determine that storage has corresponding to access
The CDN source node of the file of content information；
S32, determine that client is to the shortest path of CDN source node；
S33, the IP address of all CDN node in shortest path is stored as routing table；
S34, generate TCP access request according at least to accessing content information and routing table.
In the present embodiment, directly determine user to CDN source node shortest path, and by this path
The IP address of all of CDN node is stored as routing table, finally according to accessing content information and routing table
Generate new TCP access request for user access storage have access content node (CDN node or
Person's CDN source node)；The CDN node comprised on shortest path certainly exists and has been cached with
The caching CDN node of content needed for user, and user is shortest path to the path of CDN source node,
So the path of the caching CDN node that user is cached with required content to this is inevitable is also shortest path, because of
This, and not necessarily this caching CDN node directly sends required content for user, it may be possible to pass through
CDN node on shortest path provides the user service, because this is as the CDN of a server
Node transmits data for user and must be provided the user by caching CDN node than the direct of distance
The quality of service to be got well, thus reaches to promote the purpose of Consumer's Experience；Since additionally, there is caching CDN
Node, is still to the IP address of all nodes on the whole path of CDN source node to be stored as route
The reason of table is, it is contemplated that it is whole that caching CDN node may not have needed for total caching user
The situation of individual file, when this happens, still can be according to described routing table Hui Yuan, to obtain use
Access content needed for family.
In the implementation method of the content distributing network based on SDN of an embodiment of the disclosure, will be the shortest
The IP address of all CDN node in path is stored as routing table and includes:
The IP of the CDN node in described shortest path it is successively read along client to CDN source node direction
Address is stored as queue, to determine described routing table.
In the present embodiment, by by all CDN node IP sequence of addresses in shortest path in queue,
Further simplify the operation forwarding new access request to read IP address each time, because the feature of queue is just
It is, can only write from one end of queue, read from the other end of queue and delete.
In access request retransmission method in the content distributing network of an embodiment of the disclosure, accessing please
Asking as UDP access request, described UDP access request includes target CDN node IP address, uses
In judging whether current CDN node is target CDN node.
After receiving access request, resolve the UDP access request received to determine that this UDP accesses
According to the access information obtained, access information entrained in request, then judges that current CDN node is
It is no for target CDN node, it is achieved thereby that whether the current CDN node of checking rapidly and reliably is mesh
The purpose of mark CDN node, accelerates the response speed to user access request, it is achieved that visit UDP
Ask the acceleration of request, improve the quality of the service provided the user, it is ensured that Consumer's Experience.
In certain embodiments, judge that current CDN node is whether as target CDN according to described access information
Node is:
Relatively described current CDN node IP address and described target CDN node IP address are to judge to work as
Whether front CDN node is target CDN node.
The present embodiment is by directly comparing the IP address (joint of the target CDN node entrained by access request
The beacon information with uniqueness of point) method the most consistent with the IP address of current CDN node,
Achieve the response to user access request more quickly and accurately.
Described access request is forwarded to next CDN node is: be forwarded to nearest by described access request
CDN node.
By access request being forwarded to nearest CDN node in the present embodiment, make use of nearest CDN
User access request is responded rapidly to by inter-node communication steady quality, the most specific ensure that.
Disclosure embodiment can be passed through hardware processor (hardware processor) realize being correlated with
Functional module.
It should be noted that for aforesaid each method embodiment, in order to be briefly described, therefore by its all table
Stating and merge for a series of action, but those skilled in the art should know, the disclosure is by being retouched
The restriction of the sequence of movement stated because according to the disclosure, some step can use other orders or with
Shi Jinhang.Secondly, those skilled in the art also should know, embodiment described in this description all belongs to
In preferred embodiment, necessary to involved action and the module not necessarily disclosure.
In the above-described embodiments, the description to each embodiment all emphasizes particularly on different fields, and does not has in certain embodiment
The part described in detail, may refer to the associated description of other embodiments.
As shown in Figure 4, the access request in the content distributing network of an embodiment of the disclosure forwards system
System, including:
Access request parsing module, for resolving the access request received to determine in described access request
Entrained access information；
Destination node determines module, for judging that current CDN node is whether as mesh according to described access information
Mark CDN node；
Access request respond module, for when described current CDN node is target CDN node, rings
Should described access request；
Access request forwarding module, is used for when described current CDN node is not target CDN node,
Forward described access request to next CDN node.
In this enforcement, after receiving access request, resolve the access request received to determine this access
According to the access information obtained, access information entrained in request, then judges that current CDN node is
It is no for target CDN node, it is achieved thereby that whether the current CDN node of checking rapidly and reliably is mesh
The purpose of mark CDN node, accelerates the response speed to user access request, improves and provide the user
The quality of service, it is ensured that Consumer's Experience.
As it is shown in figure 5, the access request in the content distributing network of an embodiment of the disclosure forwards system
In system, access request is TCP access request, and access information at least includes accessing content information and accessing road
By table；Access content information to be used for judging whether current CDN node has stored corresponding to described access content
The file of information, described access routing table is used for determining next CDN node.
Wherein, access request forwarding module includes:
IP address reading unit, for reading the IP ground of next CDN node in described access routing table
Location；
Routing table reset cell, for accessing route by the IP address of next CDN node described from described
Table is deleted；
Request retransmission unit, is used for the IP address according to next CDN node described by described access request
It is forwarded to next CDN node described.
In the present embodiment, by reading behind the IP address of next CDN node that will be forwarded to the most immediately
Delete when the method for this IP address makes to forward each time new access request and can directly read routing table
In first IP address, and need not carry out unnecessary calculating and compare (if in repeating process,
From start to finish routing table does not the most change, when reading next CDN node the most each time all must by calculate from
Whole routing table reads the IP address of next CDN node described, for example, it is desired to record reads next time
From the beginning of the n-th byte, so should count and calculate again, cause the waste of room and time), and lead to
The process crossing the present embodiment has only to order reading from the gauge outfit of routing table when turning to next CDN node
Take first IP address, not only save time and space, it is thus also avoided that can owing to calculating and counting
The mistake that can bring, such as, jump directly to farther node or jump back to a node etc..
In certain embodiments, access request is UDP access request, wraps in described UDP access request
Include target CDN node IP address, be used for judging whether current CDN node is target CDN node.
In certain embodiments:
Destination node determines that module is for the IP address of relatively described current CDN node and described target
The IP address of CDN node is to judge that whether described current CDN node is as target CDN node；
Access request forwarding module is for when judging that described current CDN node is not target CDN node
Time, described access request is forwarded to nearest CDN node.
On the other hand, embodiments of the invention also provide for a kind of server, and described server includes:
Memorizer, is used for storing program；
Processor, for performing the program of described memorizer storage, described program makes described processor hold
The access request retransmission method in any one content distributing network in row the above embodiment of the present invention.
Server in the present embodiment can be the CDN server in CDN system.
On the other hand, embodiments of the invention also provide for a kind of server, and described server is laid with this
The access request repeater system in any one content distributing network in bright above-described embodiment.
Server in the present embodiment can be the CDN server in CDN system.
Embodiment of the method described above is only schematically, wherein said illustrates as separating component
Unit can be or may not be physically separate, the parts shown as unit can be or
Person may not be physical location, i.e. may be located at a place, or can also be distributed to multiple network
On unit.Some or all of module therein can be selected according to the actual needs to realize the present embodiment
The purpose of scheme.Those of ordinary skill in the art are not in the case of paying performing creative labour, the most permissible
Understand and implement.
By the description of above embodiment, those skilled in the art is it can be understood that arrive each enforcement
Example can add the mode of required general hardware platform by software and realize, naturally it is also possible to pass through hardware.
Based on such understanding, the part that prior art is contributed by technique scheme the most in other words can
Embodying with the form with software product, this computer software product can be stored in computer-readable and deposit
In storage media, such as ROM/RAM, magnetic disc, CD etc., including some instructions with so that a calculating
Machine equipment (can be personal computer, server, or the network equipment etc.) perform each embodiment or
The method described in some part of person's embodiment.
Those skilled in the art it should be appreciated that embodiment of the disclosure the method that can be provided as, system or
Computer program.Therefore, the disclosure can use complete hardware embodiment, complete software implementation,
Or combine the form of embodiment in terms of software and hardware.And, the disclosure can use one or more
The computer-usable storage medium wherein including computer usable program code (includes but not limited to disk
Memorizer and optical memory etc.) form of the upper computer program implemented.
The disclosure is with reference to method, equipment (system) and the computer program product according to disclosure embodiment
The flow chart of product and/or block diagram describe.It should be understood that can be by computer program instructions flowchart
And/or flow process in each flow process in block diagram and/or square frame and flow chart and/or block diagram and
/ or the combination of square frame.Can provide these computer program instructions to general purpose computer, special-purpose computer,
The processor of Embedded Processor or other programmable data processing device is to produce a machine so that logical
The instruction of the processor execution crossing computer or other programmable data processing device produces for realizing at stream
The function specified in one flow process of journey figure or multiple flow process and/or one square frame of block diagram or multiple square frame
Device.
These computer program instructions may be alternatively stored in and computer or the process of other programmable datas can be guided to set
In the standby computer-readable memory worked in a specific way so that be stored in this computer-readable memory
In instruction produce and include the manufacture of command device, this command device realize in one flow process of flow chart or
The function specified in multiple flow processs and/or one square frame of block diagram or multiple square frame.These computer programs
Instruction also can be loaded in computer or other programmable data processing device so that computer or other
On programmable device, execution sequence of operations step is to produce computer implemented process, thus at computer
Or the instruction performed on other programmable devices provides for realizing in one flow process of flow chart or multiple flow process
And/or the step of the function specified in one square frame of block diagram or multiple square frame.
Last it is noted that above example is only in order to illustrate the technical scheme of the disclosure, rather than to it
Limit；Although the disclosure being described in detail with reference to previous embodiment, the ordinary skill of this area
Personnel it is understood that the technical scheme described in foregoing embodiments still can be modified by it, or
Person carries out equivalent to wherein portion of techniques feature；And these amendments or replacement, do not make corresponding skill
The essence of art scheme departs from the spirit and scope of the disclosure each embodiment technical scheme.
Claims (10)
1. the access request retransmission method in content distributing network, including:
Resolve the access request received to determine access information entrained in described access request；
According to described access information judge current CDN node whether as target CDN node, the most then
Described current CDN node responds described access request；
If it is not, then described access request is forwarded to next CDN node.
Method the most according to claim 1, wherein, described access request is TCP access request,
Described access information at least includes accessing content information and accessing routing table；Described access content information is used for
Judge whether described current CDN node stores the file corresponding to described access content information, described visit
Ask that routing table is for determining next CDN node.
Method the most according to claim 2, wherein, described is forwarded to next by described access request
CDN node includes:
The IP address of next CDN node is read from described access routing table；
The IP address of next CDN node described is deleted from described access routing table；
Described access request is forwarded to next CDN described by the IP address according to next CDN node described
Node.
Method the most according to claim 1, wherein, described access request is UDP access request,
Described UDP access request includes target CDN node IP address, is used for judging current CDN node
Whether it is target CDN node.
Method the most according to claim 4, wherein, described current according to the judgement of described access information
Whether CDN node is that target CDN node is:
Relatively described current CDN node IP address and described target CDN node IP address are to judge to work as
Whether front CDN node is target CDN node；
Described described access request is forwarded to next CDN node it is:
Described access request is forwarded to nearest CDN node.
6. the access request repeater system in content distributing network, including:
Access request parsing module, for resolving the access request received to determine in described access request
Entrained access information；
Destination node determines module, for judging that current CDN node is whether as mesh according to described access information
Mark CDN node；
Access request respond module, for when described current CDN node is target CDN node, rings
Should described access request；
Access request forwarding module, is used for when described current CDN node is not target CDN node,
Forward described access request to next CDN node.
System the most according to claim 6, wherein, described access request is TCP access request,
Described access information at least includes accessing content information and accessing routing table；Described access content information is used for
Judge whether described current CDN node stores the file corresponding to described access content information, described visit
Ask that routing table is for determining next CDN node.
System the most according to claim 7, wherein, described access request forwarding module includes:
IP address reading unit, for reading the IP ground of next CDN node in described access routing table
Location；
Routing table reset cell, for accessing route by the IP address of next CDN node described from described
Table is deleted；
Request retransmission unit, is used for the IP address according to next CDN node described by described access request
It is forwarded to next CDN node described.
System the most according to claim 6, wherein, described access request is UDP access request,
Described UDP access request includes target CDN node IP address, is used for judging current CDN node
Whether it is target CDN node.
System the most according to claim 9, wherein,
Described destination node determines that module is for the IP address of relatively described current CDN node and described mesh
The IP address of mark CDN node is to judge that whether described current CDN node is as target CDN node；
Described access request forwarding module is for when judging that described current CDN node is not target CDN joint
During point, described access request is forwarded to nearest CDN node.
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| CN109391640A (en) * | 2017-08-03 | 2019-02-26 | 中国移动通信有限公司研究院 | Dynamic content accesses accelerated method, system, medium and computing device |
| CN112953984A (en) * | 2019-12-10 | 2021-06-11 | 贵州白山云科技股份有限公司 | Data processing method, device, medium and system |
| CN113271362A (en) * | 2021-06-08 | 2021-08-17 | 天闻数媒科技（湖南）有限公司 | Education resource processing method, device, system and medium based on hybrid cloud |
| CN113765793A (en) * | 2021-06-07 | 2021-12-07 | 北京京东振世信息技术有限公司 | Data transmission method and device, storage medium and electronic equipment |
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| CN104168300A (en) * | 2013-05-17 | 2014-11-26 | 中国电信股份有限公司 | Content acceleration method and system |
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| CN103701700A (en) * | 2013-12-24 | 2014-04-02 | 中国科学院信息工程研究所 | Node discovering method and system in communication network |
| CN103716254A (en) * | 2013-12-27 | 2014-04-09 | 中国科学院声学研究所 | Self-aggregation cooperative caching method in CCN |
| CN104954219A (en) * | 2014-03-27 | 2015-09-30 | 北京奇虎科技有限公司 | CDN (Content Delivery Network) access path optimization method, device and system |
| CN104618237A (en) * | 2015-01-21 | 2015-05-13 | 网宿科技股份有限公司 | TCP/UDP (Transmission Control Protocol/User Datagram Protocol)-based wide area network acceleration system and method |
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| CN113765793A (en) * | 2021-06-07 | 2021-12-07 | 北京京东振世信息技术有限公司 | Data transmission method and device, storage medium and electronic equipment |
| CN113765793B (en) * | 2021-06-07 | 2023-09-05 | 北京京东振世信息技术有限公司 | Data transmission method and device, storage medium and electronic equipment |
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