add iCache (#4501)

README.md

@@ -687,6 +687,7 @@ _Data stores with expiring records, in-memory distributed data stores, or in-mem
 - [gocache](https://github.com/eko/gocache) - A complete Go cache library with multiple stores (memory, memcache, redis, ...), chainable, loadable, metrics cache and more.
 - [gocache](https://github.com/yuseferi/gocache) - A data race free Go ache library with high performance and auto pruge functionality
 - [groupcache](https://github.com/golang/groupcache) - Groupcache is a caching and cache-filling library, intended as a replacement for memcached in many cases.
+- [icache](https://github.com/mdaliyan/icache) - A High Performance, Generic, thread-safe, zero-dependency cache package.
 - [imcache](https://github.com/erni27/imcache) - A generic in-memory cache Go library. It supports expiration, sliding expiration, max entries limit, eviction callbacks and sharding.
 - [nscache](https://github.com/no-src/nscache) - A Go caching framework that supports multiple data source drivers.
 - [otter](https://github.com/maypok86/otter) - A high performance lockless cache for Go. Many times faster than Ristretto and friends.