Welcome to another post in our series of interview blogs for the upcoming Percona Live Europe 2017 in Dublin. This series highlights a number of talks that will be at the conference and gives a short preview of what attendees can expect to learn from the presenter.

This blog post is with Dana Van Aken, a Ph.D. student in Computer Science at Carnegie Mellon University. Her talk is titled Automatic Database Management System Tuning Through Large-Scale Machine Learning. DBMSs are difficult to manage because they have hundreds of configuration “knobs” that control factors such as the amount of memory to use for …

In this blog post, we’ll look at how ProxySQL improves MySQL SSL connection performance.

When deploying MySQL with SSL, the main concern is that the initial handshake causes significant overhead if you are not using connection pools (i.e., mysqlnd-mux with PHP, mysql.connector.pooling in Python, etc.). Closing and making new connections over and over can greatly impact on your total query response time. A customer and colleague recently educated me that although you can improve SSL encryption/decryption performance with the AES-NI hardware extension on modern Intel processors, the actual overhead when creating SSL connections comes from the handshake when multiple roundtrips between the server and client are needed.

With ProxySQL’s support for SSL on its backend connections and connection pooling, we can have it sit in front of any application, on the same server (illustrated below):

…

Comparing Oracle MySQL Group Replication and Galera Cluster through a probability perpective seems quite interesting. At commit time both use a group certification process that requires network round trips. The required time for these network roundtrips is what will mainly determined the cost of a transaction. Let us try to compute an estimate of the ...continue reading "Probability perspective on MySQL Group replication and Galera Cluster"

On Sunday I will travel over to Dublin for Percona Live 2017.

I have two sessions, a keynote on the Wednesday morning where I’ll be talking about all the fun new stuff we have planned at Continuent and some new directions we’re working on.

I also have a more detailed session on our new appliers for Kafka, Elasticsearch and Cassandra, that’s Tuesday morning.

If you haven’t already booked to come along, feel free to use the discount code SeeMeSpeakPLE17 which will get you 15% off!

Recently, Oracle added new certification for MySQL,

MySQL Cloud Service 2018 Implementation Essentials

This exam is all about MySQL Enterprise Edition with MySQL Cloud Service. Best study resource for this exam is “MySQL official documentation”. Along with MySQL Enterprise topics given in exam topics, this exam also includes one major part of MySQL Cloud Service.

Exam Topics: 

• Oracle MySQL Enterprise Product Suite
• Installation and Architecture
• Database Design
• MySQL …

With the next version of MySQL that is MySQL 8, there is a very nice feature of creating "roles" which can be assigned certain privileges and then these roles can be assigned to users, thus helping us in maintaining the principle of least privilege.



It makes our life as developers and DBAs easier as we do not have to remember what are the specific privileges assigned to different users. These "roles" can simply be assigned or de-assigned from users as necessary.

The setup process is pretty easy and intuitive.

1. Create Role:

CREATE ROLE 'read', 'write', 'read_write';

Which essentially …

Welcome to another post in our series of interview blogs for the upcoming Percona Live Europe 2017 in Dublin. This series highlights a number of talks that will be at the conference and gives a short preview of what attendees can expect to learn from the presenter.

This blog post is with Charity Majors, CEO/Cofounder of Honeycomb. Her talk is Debugging with Logs (and Other Events). Her presentation covers some of the lessons every engineer should know (and often learns the hard way): why good logging solutions are so expensive, why treating your logs as strings can be costly and dangerous, how logs can impact code …

This edition of Log Buffer covers Cloud, Oracle, SQL Server and MySQL and much more.

Cloud:

Introducing managed SSL for Google App Engine

Using Cloud Foundry CUPS to inject Spring Security credentials into a Spring Boot Application

ClusterControl in the Cloud – All Our Resources

Monitoring Amazon Aurora Audit Events with Amazon CloudWatch

Integrating Teradata with Amazon …

In this blog post, we talk about the results of Percona’s time series database poll “What Database Engine Are You Using to Store Time Series Data?”

Time series data is some of the most actionable data available when it comes to analyzing trends and making predictions. Simply put, time series data is data that is indexed not just by value, but by time as well – allowing you to view value changes over time as they occur. Obvious uses include the stock market, web traffic, user behavior, etc.

With the increasing number of smart devices in the Internet of Things (IoT), being able to track data over time is more and more important. With time series data, you can measure and make …

This post is the third of a series focusing on the MySQL high availability solutions available in 2017.

The first post looked at the elders, the technologies that have been around for more than ten years. The second post talked about the adults, the more recent and mature technologies. In this post, we will look at the emerging MySQL high availability solutions. The “baby” MySQL high availability solutions I chose for the blog are group replication, proxies and distributed storage.

Group replication

Group replication is the Oracle response to Galera. The term “InnoDB cluster” means a cluster using group replication. The goal is offering …