Resilience operation of a data layered architecture

A data repository of a plurality of data repositories that are configured for communicating via a communication protocol, thereby constituting a data backend system of a communication network,

• wherein a plurality of application front end entities of an application layer of the communication network can access the data backend system,
• wherein each one of the plurality of application front end entities is configured for communicating with a respective given data repository,
• the data repository comprising:
• a first interface which is configured for receiving, from a first application front end entity of the application layer, a request for routing information for a request message towards a storage location of data or a data operation message being created by the first application front end entity based on the request message,
• wherein the request message requests a service requiring a data operation on the data,
• a processor which is configured for retrieving, in response to said receiving of the request for routing information or of the data operation message, routing information towards a second application front end entity of the application layer which communicates with a given data repository,
• wherein the storage location of the data is at least on the given data repository,
• wherein the first interface is further configured for sending the routing information to the first application front end entity with the routing information being such that the first application front end entity is enabled to route the request message to the second application front end entity using a communication protocol of the application layer.

A method of routing a request message in a communication network,

• wherein the request message requests a service requiring a data operation on data,
• wherein the data is stored on a plurality of data repositories configured for communicating via a communication protocol thereby constituting a data backend system of the communication network,
• wherein a plurality of application front end entities of an application layer of the communication network can access the data backend system,
• wherein each one of the plurality of application front end entities is configured for communicating with a respective given data repository,
• wherein the method comprises:
• a first application front end entity of the application layer receiving the request message,
• in response to said receiving of the request message, the first application front end entity retrieving, from a storage location database of the data backend system, routing information towards a second application front end entity of the application layer which communicates with a given data repository,
• wherein a storage location of the data is at least on the given data repository,
• the first application front end entity routing the request message to the second application front end entity based on the routing information and using a communication protocol of the application layer.

An application front end entity of a plurality of application front end entities of an application layer of a communication network,

• wherein data is stored on a plurality of data repositories configured for communicating via a communication protocol, thereby constituting a data backend system of the communication network,
• wherein the plurality of application front end entities can access the data backend system,
• wherein each one of the plurality of application front end entities is configured for communicating with a respective given data repository,
• wherein the application front end entity comprises:
• a first interface configured for receiving a request message requesting a service requiring a data operation on the data,
• a second interface configured for, in response to said receiving of the request message, retrieving, from a storage location database of the data backend system, routing information towards a second application front end entity of the application layer which communicates with a given data repository,
• wherein a storage location of the data is at least on the given data repository,
• wherein the application front end entity is further configured for routing the request message to the second application front end entity based on the routing information and using a communication protocol of the application layer.

A method of executing a data operation on data in response to receiving a request message in a communication network,

• wherein the request message requests a service requiring the data operation,
• wherein the data is stored on a plurality of data repositories configured for communicating via a communication protocol, thereby constituting a data backend system of the communication network,
• wherein a plurality of application front end entities of an application layer of the communication network can access the data backend system,
• wherein each one of the plurality of application front end entities is configured for communicating with a respective given data repository,
• wherein the method comprises:
• a second application front end entity of the application layer receiving the request message from a first application front end entity of the application layer,
• wherein a cached copy of the data is stored on the second application front end entity,
• in response to said receiving of the request message, the second application front end entity executing the data operation on the cached copy of the data.

An application front end entity of a plurality of application front end entities of an application layer of a communication network,

• wherein data is stored on a plurality of data repositories configured for communicating via a communication protocol, thereby constituting a data backend system of the communication network,
• wherein the plurality of application front end entities can access the data backend system,
• wherein each one of the plurality of application front end entities is configured for communicating with a respective given data repository,
• wherein the application front end entity comprises:
• an interface configured for receiving a request message from a first application front end entity of the application layer,
• wherein the request message requests a service requiring a data operation on the data,
• wherein a cached copy of the data is stored on the application front end entity,
• a processor configured for, in response to said receiving of the request message, executing the data operation of the data on the cached copy of the data.