Monthly Archives - June 2018

This Week in Data with Colin Charles 44: MongoDB 4.0 and Facebook MyRocks

Colin Charles

Join Percona Chief Evangelist Colin Charles as he covers happenings, gives pointers and provides musings on the open source database community.
There have been two big pieces of news this week: the release of MongoDB 4.0 and the fact that Facebook has migrated the Messenger backend over to MyRocks.
MongoDB 4.0 is stable, with support for multi-document […]

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Percona XtraDB Cluster 5.7.22-29.26 Is Now Available

Percona XtraDB Cluster 5.7

Percona announces the release of Percona XtraDB Cluster 5.7.22-29.26 (PXC) on June 29, 2018. Binaries are available from the downloads section or our software repositories.
Percona XtraDB Cluster 5.7.22-29.26 is now the current release, based on the following:

Percona Server for MySQL 5.7.22
Galera/Codership WSREP API Release 5.7.21
Galera Replication library 3.23

Deprecated
The following variables are deprecated starting from this […]

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MySQL 8.0 Hot Rows with NOWAIT and SKIP LOCKED

MySQL 8.0 hot rows

In MySQL 8.0 there are two new features designed to support lock handling: NOWAIT and SKIP LOCKED. In this post, we’ll look at how MySQL 8.0 handles hot rows. Up until now, how have you handled locks that are part of an active transaction or are hot rows? It’s likely that you have the application […]

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Faster Point In Time Recovery (PITR) in PostgreSQL Using a Delayed Standby

PostgreSQL Point in Time Recovery

The need to recover a database back to a certain point in time can be a nerve-racking task for DBAs and for businesses. Can this be simplified? Could it be made to work faster? Can we recover to a given point in time with zero loss of transactions/records? Fortunately, the answer to these questions […]

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What To Do When MySQL Runs Out of Memory

MySQL Memory Error

Troubleshooting crashes is never a fun task, especially if MySQL does not report the cause of the crash. For example, when a MySQL memory issue shows up. Peter Zaitsev wrote a blog post in 2012: Troubleshooting MySQL Memory Usage with lots of useful tips. With the new versions of MySQL (5.7+) and performance_schema, we […]

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