forked from golang/hotime
75 lines
1.2 KiB
Go
75 lines
1.2 KiB
Go
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package cache
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import (
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"sync"
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"time"
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)
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// Memory struct contains *memcache.Client
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type Memory struct {
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sync.Mutex
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data map[string]*data
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}
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type data struct {
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Data interface{}
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Expired time.Time
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}
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// NewMemory create new memcache
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func NewMemory() *Memory {
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return &Memory{
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data: map[string]*data{},
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}
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}
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// Get return cached value
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func (mem *Memory) Get(key string) interface{} {
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if ret, ok := mem.data[key]; ok {
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if ret.Expired.Before(time.Now()) {
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mem.deleteKey(key)
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return nil
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}
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return ret.Data
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}
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return nil
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}
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// IsExist check value exists in memcache.
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func (mem *Memory) IsExist(key string) bool {
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if ret, ok := mem.data[key]; ok {
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if ret.Expired.Before(time.Now()) {
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mem.deleteKey(key)
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return false
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}
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return true
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}
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return false
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}
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// Set cached value with key and expire time.
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func (mem *Memory) Set(key string, val interface{}, timeout time.Duration) (err error) {
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mem.Lock()
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defer mem.Unlock()
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mem.data[key] = &data{
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Data: val,
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Expired: time.Now().Add(timeout),
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}
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return nil
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}
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// Delete delete value in memcache.
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func (mem *Memory) Delete(key string) error {
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mem.deleteKey(key)
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return nil
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}
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// deleteKey
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func (mem *Memory) deleteKey(key string) {
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mem.Lock()
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defer mem.Unlock()
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delete(mem.data, key)
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}
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