Recently i have reviewed a simple web application, where problem was with moving “read” count of news from main table to another table in MySQL. The logic is separating counting “read”s for news from base table. The way you can accomplish this task, you can create a new “read” table in MySQL, then add necessary code to news admin panel for inserting id,read,date into this new “read” table, while adding new articles. But for test purposes, i decide to move this functionality to MongoDB. Overall task is -> Same data must be in MySQL, counting logic must be in MongoDB and data must be synced from MongoDB to MySQL. Any programming language will be sufficient but, Python is an easy one to use. You can use Official mysql-connector-python and pymongo. Firstly you must create empty “read” table in MySQL, insert all necessary data from base table to “read” and there should be after insert trigger for …
[Read more]Join us Tuesday, June 2nd at 2 PM EST (6 PM GMT), as brainiac Preetam Jinka covers the unique characteristics of time series data, time series indexing, and the basics of log-structured merge (LSM) trees and B-trees. After establishing some basic concepts, he will explain how Catena’s design is inspired by many of the existing systems today and why it works much better than its present alternatives.
This webinar will help you understand the unique challenges of high-velocity time-series data in general, and VividCortex’s somewhat unique workload in particular. You’ll leave with an understanding of why commonly used technologies can’t handle even a fraction of VividCortex’s workload, and what we’re exploring as we investigate alternatives to our MySQL-backed time-series database.
Register for the unique opportunity to learn about time series storage …
[Read more]Amazon Web Services is one of the most popular cloud environments. Galera Cluster is one of the most popular MySQL clustering solutions. This is exactly why you’ll see many Galera clusters running on EC2 instances. In this blog post, we’ll go over five performance tips that you need to take under consideration while deploying and running Galera Cluster on EC2. If you want to run regular MySQL on EC2, you’ll find these tips still useful because, well, Galera is built on top of MySQL after all. Hopefully, these tips will help you save time, money, and achieve better Galera/MySQL performance within AWS.
Choosing a good instance size
When you take a look at the instance chart in the AWS documentation, you’ll see that there are so many instances to choose from. Obviously, you will pick an instance depending on your application needs (therefore you have to do some benchmarking first to understand those needs), but …
[Read more]Student questions are always interesting! They get me to think and to write. The question this time is: “How do I write a Bash Shell script to process multiple MySQL script files?” This post builds the following model (courtesy of MySQL Workbench) by using a bash shell script and MySQL script files, but there’s a disclaimer on this post. It shows both insecure and secure approaches and you should avoid the insecure ones.
It seems a quick refresher on how to use arrays in
bash shell may be helpful. While it’s essential in a
Linux environment, it’s seems not everyone masters the
bash shell.
Especially, since I checked my …
[Read more]
I recently released version 0.1.10 of my library django-mysql, for which the main new
feature was a backend for Django’s cache framework called
MySQLCache. This post covers some of the inspiration
and improvements it has, as well as a basic benchmark against
Django’s built-in DatabaseCache.
TL;DR - it’s better than DatabaseCache, and if you’re using MySQL, please try it out by following the instructions linked at the end.
Why bother?
Django’s cache framework provides a generic API for key-value
storage, and gets used for a variety of caching tasks in
applications. It ships with multiple backends for popular
technologies, including Redis and Memcached, as well as a basic
cross-RDBMS DatabaseCache. The
DatabaseCache is recommended only for …
Taxonomy upgrade extras: mysql performance monitor monitoring fpmmm maas performance monitor mpm
FromDual has the pleasure to announce the release of the new version 0.10.4 of its popular Database Performance Monitor for MySQL, MariaDB, Galera Cluster and Percona Server fpmmm.
You can download …
[Read more]FromDual has the pleasure to announce the release of the new version 0.10.4 of its popular Database Performance Monitor for MySQL, MariaDB, Galera Cluster and Percona Server fpmmm.
You can download fpmmm from here.
In the inconceivable case that you find a bug in
fpmmm please report it to our Bug-tracker.
Any feedback, statements and testimonials are welcome as well! Please send them to feedback@fromdual.com.
This release contains various minor bug fixes and improvements.
New installation of fpmmm v0.10.4
Please follow our mpm installation …
[Read more]Yesterday I was able to present to the Portland MySQL Users Group two presentations that are important foundations for effective development with MySQL.
Download Architecture Presentation
Download Development Presentation
With 26 years of architectural experience in RDBMS and 16 years of MySQL knowledge, my extensive …
[Read more]In an earlier post titled Using Perl to send tweets stored in a MySQL database to twitter, I showed you a way to use MySQL to store tweets, and then use Perl to automatically send your tweets to twitter.
In this post, we will look at automatically sending a “thank you” to people who retweet your tweets – and we will be using Perl and MySQL again.
Just like in the first post, you will need to register your application with twitter via apps.twitter.com, and obtain the following:
consumer_key consumer_secret access_token access_token_secret
One caveat: twitter has a rate limit on how often you may connect with your application – depending upon what you are trying to do. See …
[Read more]