PouchDB 同步取消并重启 [英] PouchDB sync cancel and restart

问题描述

我在应用程序启动时建立同步(使用事件侦听器)，我需要停止它并再次运行.有一个 .cancel() 函数可以工作，但我如何重新启动同步?

I'm establishing sync (with event listeners) on application start and I need to stop it and run again. There is a .cancel() function that works, but how I can restart the sync?

我尝试在 cancel() 之后删除从 sync() 函数返回的对象并再次运行 sync() ，但它有时会引发警告pouchdb-6.1.2.min.js:7 (node) 警告:检测到可能的 EventEmitter 内存泄漏.添加了 11 个侦听器.使用 Emitter.setMaxListeners() 增加限制.".据我所知，cancel() 不会删除我的旧听众.

I've tried to delete object returned from sync() function after cancel() and run sync() again , but it sometimes raises a warning "pouchdb-6.1.2.min.js:7 (node) warning: possible EventEmitter memory leak detected. 11 listeners added. Use emitter.setMaxListeners() to increase limit.". As I get it, my old listeners are not removed by cancel().

如何正确停止和开始同步?

How can I stop and start sync correctly?

推荐答案

我认为正确的方法如下:

I believe the correct way is the following:

var db = new PouchDB('local');
var remoteDb = new PouchDB('URL');
var sync = db.sync(remoteDb, {live: true});

每当您想重新启动同步时，您都可以调用以下函数:

Whenever you want to restart sync you call the following function:

function restartSync() {
  sync.on('complete', () => {
    sync = db.sync(remoteDb, {live: true});
  });
  sync.cancel();
}

来源:https://pouchdb.com/guides/replication.html#canceling—复制

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