Update README.md

README.md

@@ -169,6 +169,7 @@ Please take a quick gander at the [contribution guidelines](https://github.com/a
 * [mafsa](https://github.com/smartystreets/mafsa) - MA-FSA implementation with Minimal Perfect Hashing
 * [skiplist](https://github.com/gansidui/skiplist) - Skiplist implementation in Go
 * [trie](https://github.com/derekparker/trie) - Trie implementation in Go
+* [ttlcache](https://github.com/diegobernardes/ttlcache) - An in-memory LRU string-interface{} map with expiration for golang
 * [willf/bloom](https://github.com/willf/bloom) - Go package implementing Bloom filters.
 
 ## Database