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85 lines
1.5 KiB
85 lines
1.5 KiB
package gocache
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import (
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"bytes"
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"encoding/gob"
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"github.com/allegro/bigcache/v3"
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"time"
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)
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// BigConfig 配置
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type BigConfig struct {
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DefaultExpiration time.Duration // 默认过期时间
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}
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// Big https://github.com/allegro/bigcache
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type Big struct {
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config *BigConfig
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db *bigcache.BigCache // 驱动
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}
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// NewBig 实例化
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func NewBig(config *BigConfig) *Big {
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c := &Big{config: config}
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c.db, _ = bigcache.NewBigCache(bigcache.DefaultConfig(c.config.DefaultExpiration))
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return c
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}
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// Set 插入数据 将只显示给定结构的导出字段 序列化并存储
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func (c *Big) Set(key string, value interface{}) error {
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// 将 value 序列化为 bytes
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valueBytes, err := serialize(value)
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if err != nil {
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return err
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}
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return c.db.Set(key, valueBytes)
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}
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// Get 获取单个数据
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func (c *Big) Get(key string) (interface{}, error) {
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// 获取以 bytes 格式存储的 value
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valueBytes, err := c.db.Get(key)
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if err != nil {
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return nil, err
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}
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// 反序列化 valueBytes
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value, err := deserialize(valueBytes)
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if err != nil {
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return nil, err
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}
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return value, nil
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}
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// 序列化
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func serialize(value interface{}) ([]byte, error) {
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buf := bytes.Buffer{}
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enc := gob.NewEncoder(&buf)
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gob.Register(value)
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err := enc.Encode(&value)
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if err != nil {
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return nil, err
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}
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return buf.Bytes(), nil
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}
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// 反序列化
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func deserialize(valueBytes []byte) (interface{}, error) {
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var value interface{}
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buf := bytes.NewBuffer(valueBytes)
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dec := gob.NewDecoder(buf)
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err := dec.Decode(&value)
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if err != nil {
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return nil, err
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}
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return value, nil
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}
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