casbin cache

[liergou99]

The problem with caspin caching is as follows:：
1.If the system is load balanced through multiple servers，It is more convenient to store permission data only through the database，If the cache is used, it is easy to cause data inconsistency among multiple servers
2.My system has permission tables and does not want to use sqlx-adapter table.

[GopherJ]

@liergou99

1. It's a known issue, I have thought about this, to fix this you need to share cache, casbin-rs exports Cache interface, you can implement your own cache using redis.https://github.com/casbin/casbin-rs/blob/master/src/cache/mod.rs
2. now the table is fixed to: casbin-rules, you can have a forked version to achieve your needs, or if you have an idea on making it supports user-defined table name, let us know. PR is welcome

[GopherJ]

@liergou99 BTW, we have also this repo if you would like to contribute:

https://github.com/casbin-rs/redis-cache

[liergou99]

1. I modified the sql-adapter. The modified sql-adapter uses the tables in my system and completes a simple test, but the current modified program is highly coupled with my system.
2. I think it is very useful to cache permission data through redis. I will try to write about redis-cache, but it may take a little longer. On the one hand, I have company work to complete, on the other hand, I need to understand more casbin architecture

[GopherJ]

@hackerchai could you help solving this issue? I know that you are already maybe available

BTW @liergou99 why are you using multiple CachedEnforcer instance?

[hackerchai]

@hackerchai could you help solving this issue? I know that you are already maybe available

BTW @liergou99 why are you using multiple CachedEnforcer instance?

Get it

[liergou99]

Enterprise level projects usually use multiple service nodes to achieve load balancing or dynamic expansion. If each node uses its own memory for data caching, data consistency between nodes cannot be guaranteed.

[GopherJ]

It's now https://github.com/casbin-rs/redis-cache, but not published to crates.io yet because it only works with release-v2.0.0 branch