Node.js and MySQL are some of the necessary binding needed for any web application. MySQL is one of the most popular open-source databases in the world and efficient as well. Almost every popular programming language like Java and PHP provides drivers to access and perform operations with MySQL. In this Node js and MySQL tutorial, […]

Real-time web/mobile application is becoming popular day by day. Services like Firebase and Pusher provides API’s and Services to develop effective real-time notification system for your mobile and web apps. We are not going to use these Services in this post; instead, we will develop an application that pops up a notification on a particular […]

We have covered session management in ExpressJs using a global variable technique which of course will not work in case of shared server or concurrent execution of HTTP requests which is the most familiar production scenario. Codeforgeek readers requested to provide a solution for this issue and the optimal one is to use external session […]

We have covered session management in ExpressJs using global variable technique which of course will not work in case of shared server or concurrent execution of http requests which is most familiar production scenario.

Codeforgeek readers requested to provide solution for these issue and the optimal one is to use external session storage which is not dependent on application requests, answer is Redis cause this is the light weight and easy to use NoSQL database.

In this tutorial i am going to explain how to design and code session oriented express web applications by using Redis as external session storage.

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To get familiar with Session handling in ExpressJS I recommend to read our first article …

Node.js and MySQL is one of the necessary binding needed for any web application. MySQL is one of the most popular open source database in world and efficient as well. Almost every popular programming language like Java or PHP provides driver to access and perform operations with MySQL.

In this tutorial i am trying to cover code for learning and code for production. So if you know this already and looking for ready made code for production. Click here to jump there directly.

Introduction:

Node.js is rich with number of popular packages registered at package registry called …

Real-time web/mobile application is becoming popular day by day. Services like Firebase and Pusher provides API’s and Services to develop effective real-time notification system for your mobile and web apps.

We are not going to use these Services in this post; instead, we will develop an application that pops up notification on a particular event – Say a new comment added on Post. For notification, we will use Chrome desktop notification and for real-time communication – Socket.io.

I have already covered desktop notification here and Socket.io tutorial here.

DOWNLOAD Prerequisites :

Level of the …

I have already explained about Express.js tutorial and creating simple app with it. As promised in that post i thought to come up with another Express.js tutorial with MySQL. But again, explaining just the concept about library is not enough and this is not even why codeforgeek exits. So i thought to come up with […]

For Percona Live Europe, I’ll be presenting the tutorial Elasticsearch 101 alongside my colleagues and fellow presenters from ObjectRocket Alex Cercel, DBA, and Mihai Aldoiu, Data Engineer. Here’s a brief overview of our tutorial.

Elasticsearch® is well known as a highly scalable search engine that stores data in a structure optimized for language based searches but its capabilities and use cases don’t stop there. In this tutorial, we’ll give you a hands-on introduction to Elasticsearch and give you a glimpse at some of the fundamental concepts. We’ll cover various administrative topics like …

This tutorial is for you that is trying to import your current database into a Google Cloud SQL instance, replica, that will be setup for replication purposes.

According to the documentation, you will need to run:

mysqldump \
-h [MASTER_IP] -P [MASTER_PORT] -u [USERNAME] -p \
--databases [DBS] \
--hex-blob --skip-triggers --master-data=1 \
--order-by-primary --compact --no-autocommit \
--default-character-set=utf8 --ignore-table [VIEW] \
--single-transaction --set-gtid-purged=on | gzip | \
gsutil cp - gs://[BUCKET]/[PATH_TO_DUMP]

The mysqldump parameters are:

• -h the hostname or IPV4 address of the primary should replace [MASTER_IP]
• -P the port or the primary server, usually …

This tutorial demands a service restart since some flags here presented can not be dynamically changed

What is GTID and why do I need it? Directly from the MySQL documentation (excerpt taken as is with different jargons than used here, for master/slave we are using primary/replica):

A global transaction identifier (GTID) is a unique identifier created and associated with each transaction committed on the server of origin (the master). This identifier is unique not only to the server on which it originated, but is unique across all servers in a given replication topology.

GTID assignment distinguishes between client transactions, which are committed on the master, and replicated transactions, which are reproduced on a slave. When a client transaction is committed …