Add: add method GetTTL for cache interface

bluele / gcache

An in-memory cache library for golang. It supports multiple eviction policies: LRU, LFU, ARC

MIT License

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Closed zhangcunli closed 6 years ago

zhangcunli commented 6 years ago

add method GetTTL for cache interface

erwanor commented 6 years ago

Thanks for contributing, I really appreciate that you took the time to implement your feature request.

I made some suggestions; add to those the need for some elementary unit-tests that cover the different cases (KeyNotFoundError etc.)