Severalnines Blog
The automation and management blog for open source databases

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725 blog posts in 13 categories

Understanding the Effects of High Latency in High Availability MySQL and MariaDB Solutions

To insulate our database infrastructure from failures, we build redundant cluster systems. For instance, MySQL and MariaDB high availability can be implemented by master-slave as well as master-master replication solutions. There are a number of variables that affect our choice solution. In this blog, we will look into considerations around latency.

Understanding MongoDB Indexes

MongoDB uses multikey indexes to index the content stored in arrays. If you index a field that holds an array value, MongoDB creates separate index entries for every element of the array. This blog explores the different types of indexes and reviews some things you should consider when setting up one.

Benchmarking Managed PostgreSQL Cloud Solutions - Part Two: Amazon RDS

This is part 2 in the series where we put different cloud providers head-to-head to see which one stands out. This blog is about benchmarking Amazon RDS using pgbench and sysbench and then comparing it to Amazon Aurora.

Best Practices for Running MongoDB in a Cluster

Deploying a clustered database is one thing, but how you maintain your DBM while in cluster can be a large undertaking. This blog details factors you need to take into consideration when deploying a clustered MongoDB setup.

How to Run and Configure ProxySQL 2.0 for MySQL Galera Cluster on Docker

ProxySQL 2.0 has become GA and it comes with new exciting features such as GTID consistent reads, frontend SSL, Galera and MySQL Group Replication native support. This blog post shows how to run the new ProxySQL 2.x for Galera Cluster on Docker container, which is quite a bit different as compared to ProxySQL 1.x.

Configuring PostgreSQL for Business Continuity

Business continuity for databases means databases must be continuously operational even during the disasters. It is imperative to ensure that production databases are available for the applications all the time even during the disasters, otherwise, could end-up being an expensive deal.

How to Replicate PostgreSQL Data to Remote Sites

In a busy database environment with larger size databases, the need for real-time data replication is a common occurrence. Applications often need the production data to be replicated in real-time to remote sites for analytics and other critical business operations needs. This blog provides an overview of several options you can use to replicate your PostgreSQL data to a remote site.

An Introduction to Database High Availability for MySQL & MariaDB

These days high availability is a must for any serious deployment. Long gone are days when you could schedule a downtime of your database for several hours to perform a maintenance. Making a database environment highly available is one of the highest priorities nowadays alongside data integrity. For a database, which is often considered the single source of truth, compromised data integrity can have catastrophic consequences.

How to Migrate from Oracle DB to MariaDB

Watch the replay of this webinar in which we walk you through all you need to know to plan and execute a successful migration from Oracle database to MariaDB.

HA for MySQL and MariaDB - Comparing Master-Master Replication to Galera Cluster

Replication and Galera Cluster are both widely used to implement high availability for MySQL/MariaDB, but when should you pick one over the other? What are the limitations of each solution, and what are the trade offs?
In this blog post, we will look at the differences in terms of data consistency, conflict resolution, failover, node provisioning and robustness.