开始：安装Node.js数据库 [英] Getting-started: Setup Database for Node.js

问题描述

我是node.js的新手，但很高兴试用它。我使用 Express 作为网络框架，并使用 Jade 作为模板引擎。按照本教程从 Node Camp 。

但我遇到的一个问题是我找不到用于获取数据库设置的简单教程。我尝试建立一个基本的聊天应用程序（商店会话和消息）。

有人知道一个好的教程吗？

这其他 SO post 谈论dbs使用，但因为这与我所在的Django / MySQL世界非常不同，我想确保我明白发生了什么。

谢谢！

解决方案

我假设您有 npm 使用其中一个程式码片段（我使用前一个）安装正确的方式。

Redis

我将使用redis作为数据库。对于一个，它是真的快速，持续。您需要安装它，但这很容易。

  make 
  pre> 
 
 
 Redis-cli 
 
 
 
接下来你应该自己玩redis。我建议您查看 Simon Willison 的精彩教程。他和我也建议你只需使用 redis-cli 来获得数据库的感觉。
 
 
 
 Redis客户端
 
 
 
最后，您需要安装一个redis客户端。我建议您使用mranney的 node_redis ，因为我认为这是最快，最积极开发的客户端。 p> 
 
 
 安装 
  npm install hiredis redis 
  
 包含在example.js中的简单示例：
  var redis = require（redis），
 client = redis.createClient 
 
 client.on（error，function（err）{
 console.log（Error+ err）; 
}）; 
 
 client.set（string key，string val，redis.print）; 
 client.hset（hash key，hashtest 1，some value，redis.print）; 
 client.hset（[hash key，hashtest 2，some other value]，redis.print）; 
 client.hkeys（hash key，function（err，replies）{
 console.log（replies.length +replies：）; 
 replies.forEach i）{
 console.log（+ i +：+ reply）; 
}）; 
 client.quit（）; 
} 
  
 
 
 
在数据库中存储会话
 
 
 
快速创建者已创建了一个库，以使用redis处理您的会话。
 
 
 
 安装： 
  npm install connect-redis 
  
 
 
 
 示例： 
  var connect = require（'connect'）
，RedisStore = require（'connect-redis'）; 
 
 connect.createServer（
 connect.cookieDecoder（），
 // 5分钟
 connect.session（{store：new RedisStore（{maxAge：300000}） }）
）; 
  
 
 
 
在资料库中储存邮件
 
 
 
我将使用排序集。使用 ZADD 存储邮件并使用 ZRANK ， ZRANGEBYSCORE 。
 
 
 
 Socket.io 
 
 
 
最后，如果您试图创建一个简单的聊天，我建议您看看socket.io。
 
 
 socket.io旨在让每个浏览器和移动设备的实时应用程序
 $ b设备，模糊不同的运输
机制之间的差异
。
 
 
 socket.io，我发布在 stackoverflow 。添加持久性+身份验证应该很轻松。
 
I am new to node.js but am excited to try it out. I am using Express as a web framework, and Jade as a template engine. Both were easy to get setup following this tutorial from Node Camp.

However the one problem I am finding is I can't find a simple tutorial for getting a DB set up. I am trying to build a basic chat application (store session and message).

Does anyone know of a good tutorial? 

This other SO post talks about dbs to use- but as this is very different from the Django/MySQL world I've been in, I want to make sure I understand what is going on.

Thanks!
解决方案
I assume you have npm installed the correct way using one of these snippets(I used the top one).

Redis

I would use redis as a database. For one it is really fast, persistent. You need to install it, but that is really easy.
make


Redis-cli

Next you should play with redis yourself. I would advice you to look at this excellent tutorial by Simon Willison. He and I also advice you to just play with the redis-cli to get a feeling of the database.

Redis client

Finally you need to install a redis client. I would advise you to use mranney's node_redis because I think it is the fastest and most actively developed client.

Installation
npm install hiredis redis
Simple example, included as example.js:
var redis = require("redis"),
    client = redis.createClient();

client.on("error", function (err) {
    console.log("Error " + err);
});

client.set("string key", "string val", redis.print);
client.hset("hash key", "hashtest 1", "some value", redis.print);
client.hset(["hash key", "hashtest 2", "some other value"], redis.print);
client.hkeys("hash key", function (err, replies) {
    console.log(replies.length + " replies:");
    replies.forEach(function (reply, i) {
        console.log("    " + i + ": " + reply);
    });
    client.quit();
});


Storing sessions in database

Also the author of express has created a library to handle your sessions using redis.

Installation:
npm install connect-redis
Example:
var connect = require('connect')
      , RedisStore = require('connect-redis');

connect.createServer(
  connect.cookieDecoder(),
  // 5 minutes
  connect.session({ store: new RedisStore({ maxAge: 300000 }) })
);


Storing messages in database

I think I would use a sorted set for this. Store the messages using ZADD and retrieve them using ZRANK, ZRANGEBYSCORE.

Socket.io

Finally if you are trying to create a simple chat I would advise you to have a look at socket.io.

  
socket.io aims to make realtime apps
  possible in every browser and mobile
  device, blurring the differences
  between the different transport
  mechanisms.
I also created a chat using socket.io which I posted on stackoverflow. Adding persistence + authentication should be a breeze.

                        
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