High-availability

See Percona CEO Peter Zaitsev’s Keynote at AWS re:Invent: MySQL High Availability and Disaster Recovery

AWS re:Invent

Join Percona CEO Peter Zaitsev at AWS re:Invent as he presents MySQL High Availability and Disaster Recovery on Tuesday, November 27, 2018, in the Bellagio Resort, Level 1, Gaugin 2 at 1:45 PM.

In this hour-long session, Peter describes the differences between high availability (HA) and disaster recovery (DR), and then moves through scenarios detailing […]

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How Not to do MySQL High Availability: Geographic Node Distribution with Galera-Based Replication Misuse

MySQL High Availability 2

Let’s talk about MySQL high availability (HA) and synchronous replication once more.
It’s part of a longer series on some high availability reference architecture solutions over geographically distributed areas.
Part 1: Reference Architecture(s) for High Availability Solutions in Geographic Distributed Scenarios: Why Should I Care?
Part 2: MySQL High Availability On-Premises: A Geographically Distributed Scenario
The Problem
A question I often […]

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MySQL High Availability On-Premises: A Geographically Distributed Scenario

On-Premises MySQL High Availability

MySQL High Availability. Shutterstock.com
In this article, we’ll look at an example of an on-premises, geographically distributed MySQL high availability solution. It’s part of a longer series on some high availability reference architecture solutions over geographically distributed areas.
Part 1: Reference Architecture(s) for High Availability Solutions in Geographic Distributed Scenarios: Why Should I Care?
Percona consulting’s main aim is […]

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Reference Architecture(s) for High Availability Solutions in Geographic Distributed Scenarios: Why Should I Care?

High Availability Solutions

High Availability Solutions. Shutterstock.com
In this series of blog posts, I’m going to look at some high availability reference architecture solutions over geographically distributed areas.
The Problem
Nowadays, when businesses plan a new service or application, it is very common for them to worry about ensuring a very high level of availability. 
It doesn’t matter if we […]

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MongoDB Replica set Scenarios and Internals

MongoDB replica sets replication internals r

The MongoDB® replica set is a group of nodes with one set as the primary node, and all other nodes set as secondary nodes. Only the primary node accepts “write” operations, while other nodes can only serve “read” operations according to the read preferences defined. In this blog post, we’ll focus on some MongoDB replica set scenarios, […]

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CRITICAL UPDATE for Percona XtraDB Cluster users: 5.7.23-31.31.2 Is Now Available

Percona XtraDB Cluster 5.7

To resolve a critical regression, Percona announces the release of Percona XtraDB Cluster 5.7.23-31.31.2 on October 2, 2018 Binaries are available from the downloads section or from our software repositories.
This release resolves a critical regression in Galera’s wsrep library and supersedes 5.7.23-31.31
(more…)

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High Availability for Enterprise-Grade PostgreSQL environments

High Availability PostgreSQL

High availability (HA) and database replication is a major topic of discussion for database technologists. There are a number of informed choices to be made to optimize PostgreSQL replication so that you achieve HA. In this post we introduce an overview of the topic, and cover some options available to achieve high availability in […]

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Percona XtraDB Cluster 5.7.23-31.31 Is Now Available

Percona XtraDB Cluster 5.7

This release has been superseded by 5.7.23-31.31.2 after a critical regression was found. Please update to the latest release.
Percona is glad to announce the release of Percona XtraDB Cluster 5.7.23-31.31 on September 26, 2018. Binaries are available from the downloads section or from our software repositories.
Percona XtraDB Cluster 5.7.23-31.31 is now the current release, based on the […]

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Percona XtraDB Cluster 5.6.41-28.28 Is Now Available

Percona XtraDB Cluster 5.7

Percona announces the release of Percona XtraDB Cluster 5.6.41-28.28 (PXC) on September 18, 2018. Binaries are available from the downloads section or our software repositories.
Percona XtraDB Cluster 5.6.41-28.28 is now the current release, based on the following:

Percona Server for MySQL 5.6.41
Codership WSREP API Rrelease 5.6.41
Codership Galera library 3.24

Fixed Bugs

PXC-1017: Memcached API is now disabled […]

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Setting up Streaming Replication in PostgreSQL

postgres streaming replication

Configuring replication between two databases is considered to be a best strategy towards achieving high availability during disasters and provides fault tolerance against unexpected failures. PostgreSQL satisfies this requirement through streaming replication. We shall talk about another option called logical replication and logical decoding in our future blog post.
Streaming replication works on log shipping. […]

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