Open afwn90cj93201nixr2e1re opened 4 years ago
const mysql2 = require('mysql2/promise');
const pool = mysql2.createPool({
host:'localhost', user: '', database: '',
password:'',charset:'',timezone:'',
dateStrings: true
});
const promisePool = pool.promise();
export default {pool, promisePool}
const mysql2 = require('mysql2/promise');
const pool = mysql2.createPool({
host:'localhost', user: '', database: '',
password:'',charset:'',timezone:'',
dateStrings: true
});
const promisePool = pool;
export default {pool, promisePool}
const mysql2 = require('mysql2');
const pool = mysql2.createPool({
host:'localhost', user: '', database: '',
password:'',charset:'',timezone:'',
dateStrings: true
});
const promisePool = pool.promise();
export default {pool, promisePool}
Which one is better? So, what's exactly pool.promise() doing? ( > MySQL2 also exposes a .promise() function on Pools, so you can create a promise/non-promise connections from the same pool ) What's difference between pool.promise and requiring mysql2/promise?
So, there no difference? Or what? https://github.com/sidorares/node-mysql2/blob/c955041b0785bb7b7cc5536982fab0a418e70a88/test/unit/test-Pool.js#L28 https://github.com/sidorares/node-mysql2/blob/0c422dd9d88a211015ddf4fcc8531048de9b1340/lib/pool_connection.js#L30, https://github.com/sidorares/node-mysql2/blob/570d2a0f29276777cf0fd892bb46ecf9c03628b6/lib/pool.js#L33
What is diff between PromisePool and PromisePoolConnection? What does promiseImpl mean?
В общем опишу как я понял, судя по исходникам: PromisePoolConnection(по сути он не нужен в общих случаях, кроме случаев где мы используем конструкции в приведенном ниже снипе, верно**?**) - класс прослойка для пула, просто получает обычное соединение и кладет его в пул, дальше при execute и прочих встроенных в пул методах вызывает его https://github.com/sidorares/node-mysql2/blob/108f17880afaa4bc0b34482314c6d04879ca6e39/promise.js#L322 https://github.com/sidorares/node-mysql2/blob/570d2a0f29276777cf0fd892bb46ecf9c03628b6/lib/pool.js#L6 https://github.com/sidorares/node-mysql2/blob/570d2a0f29276777cf0fd892bb46ecf9c03628b6/lib/pool.js#L161 https://github.com/sidorares/node-mysql2/blob/570d2a0f29276777cf0fd892bb46ecf9c03628b6/lib/pool.js#L138 https://github.com/sidorares/node-mysql2/blob/570d2a0f29276777cf0fd892bb46ecf9c03628b6/lib/pool.js#L50
let conn = await db.promisePool.getConnection();
await conn.execute(,[]);
await conn.execute(,[]);
conn.unprepare(query);
conn.release();
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