websocket服务器，存储数据 [英] websocket server, storing the data

问题描述

可以说我进行了一个Websocket服务器聊天(node.js + socket.io).我将如何存储聊天消息，以便当新"用户加入聊天时，他将看到旧的聊天消息，而不仅仅是看到他在聊天中发送的消息.

Lets say that i make a websocket server chat (node.js + socket.io). How would i store the chat messages, so that when a "new" user joins the chat, he will be seeing old chat messages, and not just the ones which has been sent while hes in the chat.

数据应该存储在服务器的变量中吗?像这样:

Should the data be stored in variables in the server? Something like:

var io = require('socket.io').listen(80);

var saveData = { };

io.sockets.on('connection', function (socket) {
  socket.emit('news', { hello: 'world' });
  socket.on('my other event', function (data) {
    console.log(data);
  });
});

对于更复杂的应用程序(例如游戏)来说，这是否可行?

Would it be a viable soultion for a more complex application, like a game for example?

谢谢

推荐答案

如果您确实需要为新用户存储聊天记录，我建议将其存储在RDBMS或NoSQL存储中.如果您选择NoSQL，则其中一个选项是 Apache CouchDB™(使用JSON处理文档，JavaScript处理MapReduce查询，以及API的常规HTTP).这是免费的在线书.

If you really need to store chat history for new user I would suggest storing those in RDBMS or NoSQL storage. If you choose NoSQL one of options is Apache CouchDB™ (database that uses JSON for documents, JavaScript for MapReduce queries, and regular HTTP for an API). Here is free online book about it.

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