node-mysql | pure Javascript MySQL network driver for node.js | Runtime Evironment library

Each time the application Hot Reloads it creates a new database connection pool with node-mysql2 to reuse DB connections. However when the application Hot Reloads a new pool is created. Over time this causes the RDBMS to reach its maximum number of connections (~300). How can I close the connection pool using a hook or another technique before Hot Reload abandons the app instance?

This is in the API section so front end context providers can't help.

I have a list of int representing the hexa code or int8 of a picture, that I need to insert to MySQL as Blob. I am using a NodeJS Express server to do this, in an API. I am using the node packet node-mysql2, my NodeJS version is NodeJS 12.

So my API receive this : [137,80,78,71,13,10,26,10,0,0,0,...96,130]

I want to insert this as Blob in MYSQL (this is a picture). How can I do this please ? I didn't found anything... I've done a lot of StackOverflow subjects and Google pages but I did not found.

Thanks by advance for the help !

I can not connect to my mysql cluster. I followed this tutorial : https://www.digitalocean.com/community/tutorials/how-to-create-a-multi-node-mysql-cluster-on-ubuntu-18-04 I tried connecting with workbench and mysql command to both data nodes and managment nodes on both 3306 and 1186 but I can cont connect to anywhere. Firewall is disabled on all machines. I created new user which can connect from anywhere but still no luck. Cluster works according to the test in the tutorial. To which node and port should i try to connect? Or is something missing in that tutorial?

Hie, I am building a job recruitment app with NodeJS express framework and express-handlebars as my Rendering Engine. The problem is that when I post a new Job listing and save it to my node-mysql database and then refresh the jobs list page, The UI doesn't include the newly added post until after I restart my nodejs server. This is obviously not Ideal in production. How can I rectify this? Below is my current problematic solution:

Database connection :

I am working on an app and i need to pass real time data from my sql database (i am using node-mysql module) to html file that i am rendering . I can pass static data easily but i need to pass dynamic data. 1 entry should be fetched from the database and passed to the html file.

It will be very helpful if you'r answer is as basic as possible because I am a beginner at it.

I am trying to use node-mysql Escaping query values but when I try and insert it into my MySQL query I am getting errors and can't seem to find the problem. I have tried laying out the code in different ways as well, like the one seen in github example I linked.

error:

I am using node-mysql for connecting node.js with my MySQL database since I need to get some data. However, I am receiving a wrong id field.

Code:

Messing around with node-mysql, I wrote some code that lets me use PDO-style :bound values (plus ::bound field names), and rewrites the query with ? and ?? respectively where they are found, and builds a linear array of the values when I execute the statement. I did this because when I look at a SQL statement with a ton of ? ?? all over it and have to count the number of params in my execution, it makes my eyes bleed. I want to just assign a standard object at execution time.

The trouble is, after writing this (it works) I realized my regex for finding those colons in the statement had one tiny little problem, namely, it looks like this:

Does anybody have a hands-on experience with both DB-libraries — knex vs. mysql2?

After some googling (e.g. at NPMCompare), I'm still curious to know, based on real experience, what are the pros & contra of both options?

So far, the only real advantage of using knex over mysql2, that I clearly see, is its universal support of MSSQL, MySQL, PostgreSQL, SQLite3, and Oracle, while the latter supports MySQL only, but since currently I'm focusing on MySQL only, this knex's feature seems to be less relevant.

The parameters I would consider:

• Performance & load resistance;
• Stability (production ready);
• Native ES8+ support (callback-hell-free, no extra Util.promisify wrappers, ESM/MJS support);
• Short and clear, the less verbose the better.