forked from gsn/predictor
36 lines
457 B
Go
36 lines
457 B
Go
package grib
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import (
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"sync"
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"time"
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)
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type vec [2]float64
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type item struct {
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v vec
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exp time.Time
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}
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type memCache struct {
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ttl time.Duration
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m sync.Map
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}
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func (c *memCache) get(k uint64) (vec, bool) {
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if v, ok := c.m.Load(k); ok {
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it := v.(item)
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if time.Now().Before(it.exp) {
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return it.v, true
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}
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c.m.Delete(k)
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}
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return vec{}, false
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}
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func (c *memCache) set(k uint64, v vec) {
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c.m.Store(k, item{v, time.Now().Add(c.ttl)})
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}
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