https://github.com/Pacific73/gorm-cache

gorm v2的即插即用、无需修改代码的旁路缓存。An easy-to-use look-aside cache solution for gorm v2 users.
https://github.com/Pacific73/gorm-cache

cache golang gorm

Last synced: about 2 months ago
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gorm v2的即插即用、无需修改代码的旁路缓存。An easy-to-use look-aside cache solution for gorm v2 users.

• Host: GitHub
• URL: https://github.com/Pacific73/gorm-cache
• Owner: Pacific73
• License: apache-2.0
• Created: 2022-04-15T13:19:16.000Z (over 2 years ago)
• Default Branch: master
• Last Pushed: 2024-06-14T07:20:14.000Z (3 months ago)
• Last Synced: 2024-06-21T01:53:54.517Z (3 months ago)
• Topics: cache, golang, gorm
• Language: Go
• Homepage:
• Size: 55.7 KB
• Stars: 104
• Watchers: 1
• Forks: 29
• Open Issues: 10
• Metadata Files:
  • Readme: README.ZH_CN.md
  • License: LICENSE

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README

        
[![GoVersion](https://img.shields.io/github/go-mod/go-version/Pacific73/gorm-cache)](https://github.com/Pacific73/gorm-cache/blob/master/go.mod)

[![Release](https://img.shields.io/github/v/release/Pacific73/gorm-cache)](https://github.com/Pacific73/gorm-cache/releases)

[![Apache-2.0 license](https://img.shields.io/badge/license-Apache2.0-brightgreen.svg)](https://opensource.org/licenses/Apache-2.0)

[English Version](./README.md) | [中文版本](./README.ZH_CN.md)

`gorm-cache` 旨在为gorm v2用户提供一个即插即用的旁路缓存解决方案。本缓存只适用于数据库表单主键时的场景。

我们提供2种存储介质：

1. 内存 (所有数据存储在单服务器的内存中)

2. Redis (所有数据存储在redis中，如果你有多个实例使用本缓存，那么他们不共享redis存储空间)

## 使用说明

```go

import (

    "context"

    "github.com/Pacific73/gorm-cache/cache"

    "github.com/go-redis/redis"

)

func main() {

    dsn := "user:pass@tcp(127.0.0.1:3306)/database_name?charset=utf8mb4"

    db, _ := gorm.Open(mysql.Open(dsn), &gorm.Config{})

    

    redisClient := redis.NewClient(&redis.Options{

        Addr: "localhost:6379",    

    })

    

    cache, _ := cache.NewGorm2Cache(&config.CacheConfig{

        CacheLevel:           config.CacheLevelAll,

        CacheStorage:         config.CacheStorageRedis,

        RedisConfig:          cache.NewRedisConfigWithClient(redisClient),

        InvalidateWhenUpdate: true, // when you create/update/delete objects, invalidate cache

        CacheTTL:             5000, // 5000 ms

        CacheMaxItemCnt:      5,    // if length of objects retrieved one single time 

                                    // exceeds this number, then don't cache

    })

    // More options in `config.config.go`

    db.Use(cache)    // use gorm plugin

    // cache.AttachToDB(db)

    var users []User

    

    db.Where("value > ?", 123).Find(&users) // search cache not hit, objects cached

    db.Where("value > ?", 123).Find(&users) // search cache hit

    

    db.Where("id IN (?)", []int{1, 2, 3}).Find(&users) // primary key cache not hit, users cached

    db.Where("id IN (?)", []int{1, 3}).Find(&users) // primary key cache hit

}

```

在gorm中主要有5种操作（括号中是gorm中对应函数名）:

1. Query (First/Take/Last/Find/FindInBatches/FirstOrInit/FirstOrCreate/Count/Pluck)

2. Create (Create/CreateInBatches/Save)

3. Delete (Delete)

4. Update (Update/Updates/UpdateColumn/UpdateColumns/Save)

5. Row (Row/Rows/Scan)

我们不支持Row操作的缓存。