Add RedisCache

[tyzhnenko]

Issue #3

[umputun]

thx for the PR. In addition to things above it has two more parts missing:

1. Tests
2. Change in README

[umputun]

pls let me know as pr is good for review. I got a bunch of commits notifications and have no way to figure if this commit was final or not.

[tyzhnenko]

pls let me know as pr is good for review. I got a bunch of commits notifications and have no way to figure if this commit was final or not.

Ok. I'll ping you. I'm trying to understand how can I properly use BinaryMarshaler/Unmarshaler due redis client can't convert sizerString properly and want this interface.

[tyzhnenko]

pls let me know as pr is good for review. I got a bunch of commits notifications and have no way to figure if this commit was final or not.

I've updated pull request, fix readme and add tests.
I have no idea how to add cache size to RedisCache in simple way that's why I skip size assertion in tests. I mean onEvicted hook at expired keys.
Also I had to force convert string to sizedString due Redis client return value as only string

[umputun]

I have no idea how to add cache size to RedisCache in simple way that's why I skip size assertion in tests. I mean onEvicted hook at expired keys.

ok, it makes sense. I think you can drop this data-size support in case of redis completely. The original goal was to limit in-process memory consumption for the regular caches, but for redis the only size limit making some sense is the number of pairs we store. I mean, redis memory control is not really a concern we should address here.

[tyzhnenko]

I have no idea how to add cache size to RedisCache in simple way that's why I skip size assertion in tests. I mean onEvicted hook at expired keys.

ok, it makes sense. I think you can drop this data-size support in case of redis completely. The original goal was to limit in-process memory consumption for the regular caches, but for redis the only size limit making some sense is the number of pairs we store. I mean, redis memory control is not really a concern we should address here.

Can you make a review of the latest change set? I'd like to have full list of problems :) and then I'll go to fix them all at once

[umputun]

Added just a few minor things

[tyzhnenko]

Added just a few minor things

Please take a loop the latest changes. It looks like I made all necessary changes which were pointed in comments

[umputun]

LGTM, Thx!