add vendor

vendor/github.com/leprosus/golang-ttl-map/Readme.md

@@ -0,0 +1,53 @@
+# Golang in-memory key-value storage with time-to-life
+
+## Create new map
+
+```go
+import ttl_map "github.com/leprosus/golang-ttl-map"
+
+heap := ttl_map.New()
+heap.Path("/path/to/auto-save-file.tsv")
+```
+
+## Set/Get
+
+```go
+heap.Set("key", "value", 60)
+
+value := heap.Get("key")
+```
+
+## Save/Restore
+
+```go
+heap.Save()
+
+heap.Restore()
+```
+
+## Save/Restore complex data structure
+
+```go
+var m = map[string]string{}
+m["key"] = "value"
+
+heap.Set("obj", m, 60)
+
+heap.Support(map[string]string)
+
+heap.Save()
+
+heap.Restore()
+```
+
+## List all methods
+
+* New() - creates new map
+* Path(filePath) - sets file path to save/autosave/restore
+* Set(key, value, ttl) - adds value by key with ttl in seconds
+* Get(key) - returns value or empty string
+* Del(key) - deletes value by key
+* Range(fn func(key string, value string, ttl int64)) - iterates all actual data
+* Support(struct) - registers new structure support (the method is important in a case with complex structure or map)
+* Save() - saves map in tsv file
+* Restore() - restores map from tsv file