MySQL Community Advent Calendar 2022 - How can you analyze queries in MySQL Database Service in OCI using Performance_Schema

In this blog, I’m going to discuss how to easily skip the replication errors in GTID (Global Transaction Identifier)-based replication.

In the MySQL world, if replication is broken we all use the famous SET GLOBAL SQL_SLAVE_SKIP_COUNTER=1; to skip the replication error. It always works if it’s a traditional binlogs events-based replication and is helpful to quickly resume the replication. But does this same method work for GTID-based replication? Let’s see.

In GTID-based replication, skipping a replication error in a broken replica is not as simple as binlogs-based replication. We have one old blog post — Repair MySQL 5.6 GTID replication by injecting empty transactions —where one of our colleagues showed us one way to skip and fix the replication.

Let’s get into action and …

Percona Server for MySQL 8.0.30-22 introduces a new authentication plugin, named authentication_fido. With this new plugin, it is possible to perform multi-factor authentication using hardware keys, or single-factor passwordless authentication with the same keys. This new plugin is in technical preview.

The plugin works exactly the same as the MySQL Enterprise FIDO authentication plugin, which is documented in detail in the official MySQL documentation and in the Percona Server for MySQL documentation

To try …

You now have more flexibility to configure Channels in MySQL Database Service for hybrid deployments or straightforward live migrations from on-premises or other cloud vendors. There are new options to add filters and source GTID handling in Channels for inbound replication.

The MySQL HeatWave Database Service in OCI has capabilities that enable applications to scale database read operations to millions of queries per second. Users can add and remove read replicas and load balancers to DB Systems with just a few clicks, and the service takes care of deployment, configuration, monitoring, and maintenance. Applications can connect directly to read replicas or to a read-only endpoint that automatically balances the queries across all the replicas.

UNION and UNION ALL set operators return the combined rows from 1 or more SELECT queries. CodeIgniter 4 Query Builder now supports UNION and UNION ALL queries with the $builder->union() and $builder->unionAll() methods respectively. Learn how to create these types of queries in this article.

This article and many to follow, are part of a series of articles I am writing and sharing as I learn new concepts when I learn them. I think of it as a duty in sharing the things I learn as a self-taught developer. We all need to support one another as we continue to learn and grow. #buildinpublic #learninpublic #indiehackers #developer

The Newsletter for PHP and MySQL Developers

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MySQL Advent Calendar 2022 - Day 7: how to use a backup as source for a new OCI MySQL Database Service instance with Terraform.

Percona Server for MySQL 8.0.30-22 introduces several improvements for the LDAP plugin: SASL support, support for fallback servers, and support for LDAP-based authorization. All improvements are in technical preview.

A description of the existing plugin features and usage instructions are available in the earlier blog post introducing the LDAP simple plugin, and in the Percona Server for MySQL documentation.

SASL connections

We introduced a new plugin similar to the MySQL …

What is a Delay Replica and how does it help?

MySQL Replication is useful, easy to set up, and used for very different purposes. For example:

• split reads and writes
• run data mining or reporting processes on them
• disaster recovery

To learn more, check out How Does MySQL Replication Work?

It’s important to mention that a replication server is not a backup by itself. A mistake on the source, for example, a DROP DATABASE or an UPDATE without a WHERE clause will be replicated nearly instantly to all replica servers. Simply having a replica is not going to be helpful here. How can we avoid that kind of mistake? By having a replica server that intentionally lags behind.

We can never avoid human error in database infrastructure operations. But …

MySQL Shell is a powerful way to connect to and manage MySQL instances. Connections can even be made to servers that are behind an SSH connection. In this post, we will discuss how to extend and customize MySQL Shell so that it is easier to initiate those connections.