Node.js application Redis preliminary

To use Redis in node.js, first:

1, there is a Redis installed on the server, of course, installed on the machine is ok

Node.js is installed on this machine, the client

3. The project needs to install nodejs_redis module

Note # 3, instead of installing it locally, install it in your project (reference).

The way to do that is, in a DOS window, go to your project directory and type

npm install redis

This will download a copy of nodejs_redis and place it in the current directory. Look, there’s a new folder: node_modules\redis

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Write the following code and save it in the current directory \hello.js

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var redis = require("redis"),/ / call redis
/* Connect to redis database, createClient(port,host,options); CreateClient () = redis.createclient (6379, '127.0.0.1', {}) */
client = redis.createClient(6379.'192.168.159.128'{});// If necessary, validate
//client.auth(password, callback);

// if you'd like to select database 3, instead of 0 (default), call
// client.select(3, function() { /* ... */ });

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

client.set("string key"."string val", redis.print);//set "string key" "string val"
/* redis.print, a callback function that displays the value returned by redis. The result of the previous statement will return "OK" */
client.hset("hash key"."hashtest 1"."some value", redis.print);
client.hset(["hash key"."hashtest 2"."some other value"], redis.print);
// hash key (hash key)
client.hkeys("hash key".function (err, replies) {
    console.log(replies.length + " replies:");
    replies.forEach(function (reply, i) {
        console.log("" + i + ":" + reply);
    });
client.hget("hash key"."hashtest 1",redis.print);    

End () will not return the value of an element in the "hash key". Quit () will process the statement first and then exit cleanly. / /
//client.end();
client.quit();
});
Copy the code

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Run:

DOS window, current project directory, enter

node hello.js

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References:

Github.com/mranney/nod… \

English, but there is no way, here is the most authoritative, the most comprehensive, other places to check, the feeling is bullshit.