我使用以下驱动程序运行Node.js / MySQL:https://github.com/mysqljs/mysql
该应用程序可以运行,但是如果我每秒调用该函数超过2-3次,则查询开始执行速度非常慢,有时需要几分钟才能执行10-15次查询。
即使有关于如何自行调试的提示,我也将不胜感激,我真的不知道如何看待后端发生的事情。
以下是后端的代码:
//rw.js
var mysql = require('mysql');
var dbconfig = require('../config/database');
var connection = mysql.createConnection(dbconfig.connection);
connection.query('USE ' + dbconfig.database);
function read(id, done) {
var id = id;
connection.query("SELECT * FROM users WHERE id = ?",[id], function(err, rows) {
if (err)
done(err);
if (rows.length) {
done(rows[0].progress);
};
});
}
function write(id, val, done) {
var id = id;
var val = val;
connection.query('UPDATE users SET progress = ? WHERE id = ?', [val, id], function (error, results, fields) {
if (error) throw error;
done(results)
});
};
exports.read = read;
exports.write = write;
//app.js
var rw = require('./rw.js')
app.get('/read', isLoggedIn, function(req, res) {
rw.read(req.user.id, function(currval) {
console.log("Current value is " + currval);
});
});
app.get('/write', isLoggedIn, function(req, res){
rw.read(req.user.id, function(cb) {
var val = cb + 1;
rw.write(req.user.id, val, function(justtesting) {
console.log("Just testing if we get a response" + justtesting);
});
});
});
前端:
$scope.tryread = function() {
$http.get('/read')
}
$scope.trywrite = function() {
$http.get('/write')
}