devlopment branch (#1736)

pkg/simple/client/cache/cache.go

@@ -0,0 +1,60 @@
+package cache
+
+import "time"
+
+type Interface interface {
+	// Keys retrieves all keys match the given pattern
+	Keys(pattern string) ([]string, error)
+
+	// Get retrieves the value of the given key, return error if key doesn't exist
+	Get(key string) (string, error)
+
+	// Set sets the value and living duration of the given key, zero duration means never expire
+	Set(key string, value string, duration time.Duration) error
+
+	// Del deletes the given key, no error returned if the key doesn't exists
+	Del(key string) error
+
+	// Exists checks the existence of a give key
+	Exists(key string) (bool, error)
+
+	// Expires updates object's expiration time, return err if key doesn't exist
+	Expire(key string, duration time.Duration) error
+}
+
+type simpleObject struct {
+	value  string
+	expire time.Time
+}
+
+type SimpleCache struct {
+	store map[string]simpleObject
+}
+
+func NewSimpleCache() Interface {
+	return &SimpleCache{store: make(map[string]simpleObject)}
+}
+
+func (s *SimpleCache) Keys(pattern string) ([]string, error) {
+	panic("implement me")
+}
+
+func (s *SimpleCache) Set(key string, value string, duration time.Duration) error {
+	panic("implement me")
+}
+
+func (s *SimpleCache) Del(key string) error {
+	panic("implement me")
+}
+
+func (s *SimpleCache) Get(key string) (string, error) {
+	return "", nil
+}
+
+func (s *SimpleCache) Exists(key string) (bool, error) {
+	panic("implement me")
+}
+
+func (s *SimpleCache) Expire(key string, duration time.Duration) error {
+	panic("implement me")
+}