Distlock NPM | npm.io

1.2.0 • Published 6 years ago

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1

License

MIT

Repository

Last release

6 years ago

distlock

A distributed lock implementation using redis, supporting promise and typescript

Pseudo-code

def lock(lockId, retry):
  value = redis.get(lockId)
  if value is null:
    redis.set(lockId, True)
  else:
    if retry < 3:
      sleep 100 seconds
      lock(lockId, retry++)
    else
      throw Error
lock(lockId='pid1', retry=0)

Example

import { DistLock } from 'distlock';
import * as redis from 'redis';

async tryToDoSomething(): Promise<void> {
  let l: DistLock;
  try {
    l = new DistLock(redis.redisClient, 'lockName');
    await l.lock();
    await this.doSomething()
  catch (e) {
    console.log(e);
  } finally {
    await l.unlock();
 }
}

bluebird lodash redis redis-bluebird source-map-support uuid

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