the-more-the-merrier

A naive sessions counter to avoid conflicting requests to shared resources.

Imagine you need to simultaneously test several instances of frontend that are assigned to the same huge backend (and it is hard to create another instance of that backend). You want to prevent two or more instances from altering same data objects on the backend.

So a tested frontend instance should know its unique number, but that number cannot be determined internally since multiple instances can be run by different people in different environments simultaneously.

So you just can set up a single the-more-the-merrier server, and obtain session numbers from it.

Usage

make install
make run LISTEN=8080

It sets up a server with following API:

• POST /foo returns a new session number for key foo
• GET /foo shows active session numbers for key foo
• DELETE /foo/n frees session number n for key foo
• DELETE /foo frees all session numbers for key foo

Example

> POST /test
< 0

> POST /test
< 1

> POST /test
< 2

> GET /test
< [0,1,2]

> DELETE /test/1
< [0,2]

> POST /test
< 1

> GET /test
< [0,1,2]

> DELETE /test/3
< [0,1,2]

> DELETE /test
< []