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runing-redis

v1.1.2

Published

- 运行中的 redis,程序终止数据也就没了

Downloads

4

Readme

runing-redis

  • 运行中的 redis,程序终止数据也就没了

use

const Redis = require('runing-redis');

const r = new Redis(50000);  // 限制大小(字节)

(async () => {
  const d = await r.deposit('a', 11111, 3000);
  console.log('d :>> ', d);  //--> { cache: false, data: 11111 }

  setTimeout(async() => {
    const d = await r.deposit('a', 22222, 1000);
    console.log('d :>> ', d);  //--> { cache: true, data: 11111 }
  }, 2000)
})()
  • 支持异步存储
r.deposit('a', async() => await promise, 3000);

koa 中使用

  • 封装下 runing-redis
const Redis = require('runing-redis');
const redis = new Redis(50000);

export default {
  /**
   * 储存数据,如果已经存在并且没有过期你会直接获取到该数据
   * @param {string} ctx
   * @param {*} value 是一个函数时(必须返回数据):可以进行数据请求,有缓存时并不会执行;其他类型:直接将数据存放进去
   * @param {date} overTime 过期时间,为 -1 时数据不过期。设置更小的数无意义
   * @param {boolean} cover 强制覆盖数据
   * @param {boolean} cache 想知道有获取的数据有没有缓存
   * @returns 返回设置的 value
   */
  async deposit(ctx, value, overTime = -1, cover = false, cache = false) {
    let res = null;
    if (['string', 'symbol'].includes(typeof ctx)) {
      res = await redis.deposit(ctx, value, overTime, cover)
    } else {
      res = await redis.deposit(ctx.request.url, value, overTime, cover)
      ctx.state.redis_cache = res.cache;
    }
    if (cache) return res;
    else return res.data;
  },

  // 清除数据(过期的,早以前的)
  clearCache: redis.clearCache,

  // 删除过期的数据
  deleteFristValue: redis.deleteFristValue,

  // 删除最早缓存的数据
  deleteOverValue: redis.deleteOverValue,
}
user.get('/list', async(ctx, next) => {

  const data = await redis.deposit(ctx, async () => {
    return await sql_getUserList();  // runing-redis 中有缓存数据就不会运行
  }, 100000)

  ctx.body = data;
  next();
})