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git-subtree-dir: server git-subtree-mainline:c4e617ada7git-subtree-split:e64421295f
43 lines
798 B
Go
43 lines
798 B
Go
package agent
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import (
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"sync"
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"time"
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)
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// 通用 TTL 缓存：天气结果（*WeatherResult）、CPS 转链（string）等均可复用
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type cacheEntry struct {
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data any
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expiresAt time.Time
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}
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type Cache struct {
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mu sync.Mutex
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ttl time.Duration
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items map[string]cacheEntry
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}
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func NewTTLCache(ttl time.Duration) *Cache {
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return &Cache{ttl: ttl, items: make(map[string]cacheEntry)}
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}
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func (c *Cache) Get(key string) (any, bool) {
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c.mu.Lock()
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defer c.mu.Unlock()
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e, ok := c.items[key]
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if !ok {
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return nil, false
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}
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if time.Now().After(e.expiresAt) {
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delete(c.items, key)
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return nil, false
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}
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return e.data, true
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}
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func (c *Cache) Set(key string, data any) {
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c.mu.Lock()
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defer c.mu.Unlock()
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c.items[key] = cacheEntry{data: data, expiresAt: time.Now().Add(c.ttl)}
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}
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