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Example code of lit/redis-ext

Informations about the package redis-ext

RedisExt

通过redis实现一些常用功能

安装

初始化Redis

也可以使项目中已初始化好的redisHandler

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循环计数器

场景说明

示例

初始化

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1. 分钟计数器

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2. 小时计数器

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3. 日期计数器

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4. 自定义计数器

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5. 其他操作

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固定集合

场景说明

示例

初始化

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1. 固定集合写入数据

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2. 获取固定集合数据条数

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3. 获取固定集合数据

注意: 此方法在并发量大的时候,会造成翻页获取数据不准确.

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4. 销毁固定集合

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循环限流器

特别提示

场景说明

示例

初始化

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1. 访问并增加访问次数

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2. 查询限流

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3. 销毁限流器

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异步调用方法

场景说明

示例

初始化链接

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1. 增加一个异步调用

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2. 执行一条异步调用

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3. 获取一个任务的运行状态

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4. 获取任务列表

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独占锁

示例

初始化链接

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1. 获取锁

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2. 解锁

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3. 获取锁生命周期

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Redis 字符串缓存

示例

初始化链接

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1. 获取缓存数据

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2. 写入缓存数据

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3. 获取缓存数据,不存在时则通过回调函数初始化

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4. 批量获取缓存数据

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5. 批量写入缓存数据

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6. 批量获取缓存数据,不存在时则通过回调函数初始化

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SQL结果缓存

场景说明

示例

初始化

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1. 顺序分页读取 (inOrder)

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2. 随机读取 (inRandom)

适用于随机推荐、抽奖等活动，数据保留在缓存中。

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3. 随机弹出 (inRandomPopUp)

适用于库存扣减、任务分发等场景，从缓存中删除数据。缓存为空时自动重新加载。

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4. 清除缓存

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防击穿刷新缓存

场景说明

RefreshCache 使用 Redis String 保存 JSON 数据，通过软过期和默认值占位降低热点缓存失效时的数据库压力。

假设 $ttl 为 300 秒：

  1. 数据在 300 秒内视为新鲜缓存。
  2. Redis key 的实际过期时间为 3000 秒，即 $ttl * 10。
  3. key 不存在时，首个请求先写入默认值并查询数据库；其他并发请求立即返回默认值，不等待、不查询数据库。
  4. 数据超过 300 秒后，只允许一个请求刷新数据库；其他并发请求继续返回旧缓存。
  5. 数据库查询或缓存写入失败时，返回默认值或旧缓存。

此功能使用 Redis String，缓存 key 不要与 SqlCache 等使用其他 Redis 数据类型的功能混用。默认值和回调结果必须可以被 JSON 编码。

示例

初始化

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获取缓存

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清除缓存

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信息整合器

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All versions of redis-ext with dependencies

PHP Build Version
Package Version
Requires php Version >=5.6.0
ext-json Version *
ext-curl Version *
ext-redis Version *
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