So you need to build a new set of databases, perhaps in a new location or geographical zone. Management wants it done yesterday cause the newly updated service hit the front page of reddit and your website and its back-end … Continue reading →

We have scheduled a series of several live webinars about MySQL Database Service, the only service 100% developed, managed and supported by the MySQL Team.  

Our webinars will cover a full introduction to the new service.  We will discuss the business benefits of using the MySQL Database Service compared to on-premises and vs services of “forked” cloud versions of MySQL.  We will show you how to migrate your existing database from on-premises directly into the new service.  We will demonstrate how to migrate data from RDS to the MySQL Database Service.  And if you happen to use WordPress, we will also show you how to run WordPress with the MySQL Database Service. 

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Date: 9/9/2020 @9AM PST
Title: Introduction to MySQL …

We have scheduled a series of several live webinars about MySQL Database Service, the only service 100% developed, managed and supported by the MySQL Team. Our webinars will cover a full introduction to the new service. We will discuss the business benefits of using the MySQL Database Service compar...

The MySQL team is thrilled to introduce the MySQL Database Service in the Oracle Cloud Infrastructure (OCI), the only service 100% developed, managed, and supported by the MySQL Team.

For those not familiar with MySQL Database Service, it is the same MySQL you know and use, now available in the cloud as a fully-managed service running on Oracle Generation 2 Cloud Infrastructure. It automates time-consuming tasks such as MySQL instances provisioning, patches and upgrades, and backups and restores. Users can easily scale MySQL, monitor cloud resources, and implement security best practices to meet regulatory requirements. Customer applications simply access the MySQL databases via standard MySQL protocols. The typical administrative tasks are automated, integrated, and accessible via the OCI web console, REST API, CLI, or DevOps tools.

The MySQL Database Service is available in multiple OCI Regions and quickly expanding to meet your …

    One of the problems with Structured Query Language as opposed to languages like C++, Java, Python, or PHP is that it is hard to tell if a query is good or bad just by looking at it.  A programmer with a few months of coding experience can be shown a snippet of code from a project and have a pretty good chance of telling if that code is good or not.  Some call this a 'code smell'.

    A programmer can tell if the code is legible, understandable, and many times if it performs well often times at just a glance.  Want to do an experiment on this?  Go out to Github and check out a handful of random projects.  Good code often just looks good.

    But SQL is different.  It is mostly a declarative language, telling the computer what it wants rather than how to make what it wants. You can random pull SQL queries off Gitthub or Stackoverflow or Reddit …

Migrating On-premises MySQL Enterprise Database to OCI Compute Instance MySQL Enterprise Database ?

In this post , we will walk through steps needed to migrate particular database(example - Sales database) from local Instance(On-premises) to Oracle Cloud Infrastructure Compute Instance.

We will use two new features introduced with latest release of MySQL 8.0.21.

1.       Dump Schema Utility

a.       This will help us to take the backup from On-promises database and export  to Oracle Cloud Object Storage.

2.       Load Dump Utility

a.       This is help us to Import the schema from Object Storage to local compute Instance.

More info:- …

We sometimes receive challenging requests… this is a story about one of those times.

The customer has implemented a sharding solution and would like us to review alternatives or improvements. We analyzed the possibility of using ProxySQL as it looked to be a simple implementation. However, as we had 200 shards we had to implement 200 rules — the first shard didn’t have much overload, but the latest one had to go through 200 rules and took longer.

My first idea was to use FLAGIN and FLAGOUT creating a B-Tree, but the performance was the same. Reviewing the code, I realized that the rules were implemented as a list, which means that, in the end, all the rules were going to be processed until hit with the right one and FLAGIN is used just to filter out.

At that point, I asked, what could I do? Is it possible to implement it differently? What is the performance impact?

One Problem, Two Solutions

I …

ProxySQL brings a lot of value to your MySQL infrastructures such as Caching or Connection Multiplexing but it does not come free — your database needs to go through additional processing traffic which adds some overhead. In this blog post, we’re going to discuss where this overhead comes from and measure such overhead. 

Types of Overhead and Where it Comes From 

There are two main types of overhead to consider when it comes to ProxySQL — Network Overhead and Processing Overhead. 

Network Overhead largely depends on where you locate ProxySQL. For example, in case you deploy ProxySQL on the separate host (or hosts) as in this diagram: 

The application will have added network latency for all requests, compared to …

PlanetScaleDB is a sharded database built on Vitess. Learn key sharding concepts and apply them using our quickstart demo and sample app for rating puppies written in Rust.

Recently I posted about checkpointing in MySQL, where MySQL showed interesting “wave” behavior.

Soon after Dimitri posted a solution with how to fix “waves,” and I would like to dig a little more into proposed suggestions, as there are some materials to process.

This post will be very heavy on InnoDB configuration, so let’s start with the basic configuration for MySQL, but before that some initial environment.

I use MySQL version 8.0.21 on the hardware as described here. 

As for the storage, I am not using some “old dusty SSD”, but production available Enterprise-Grade Intel SATA SSD …