Percona announces the release of Percona Toolkit 3.0.5 on November 21, 2017.
Percona Toolkit is a collection of advanced command-line tools that perform a variety of MySQL and MongoDB server and system tasks too difficult or complex for DBAs to perform manually. Percona Toolkit, like all Percona software, is free and open source.
You download Percona Toolkit packages from the web site or install from official repositories.
This release includes the following changes:
New Features:
Overview
ProxySQL had been adopted as solution for HA in place of HAProxy
in Percona PXC package.
The new solution has a lot of advantages and provide an
unbelievable flexibility we did not had before. But when
talking about HA and PXC there was still a gap.
As already discussed in my previous article “ProxySQL and Percona
XtraDB Cluster (Galera) Integration”(https://www.percona.com/blog/2016/09/15/proxysql-percona-cluster-galera-integration/),
ProxySQL is working great when using multi-master approach, but
trying to have it in single Node writer, was not possible unless
using creative (nice way to say wrong) solutions like what I was
covering in “ProxySQL and PXC using Replication HostGroup” in the
same article.
In the following months, I had few emails and requests from …
Our pleasure to announce that MySQL Community team is present at the RoOUG event with two MySQL talks. Please find the details below:
In this blog post, we’ll look at some of the facets of InnoDB page compression.
Somebody recently asked me about the best way to handle JSON data compression in MySQL. I took a quick look at InnoDB page compression and wanted to share my findings.
There is also some great material on this topic that was prepared and presented by Yura Sorokin at Percona Live Europe 2017: https://www.percona.com/live/e17/sessions/percona-xtradb-compressed-columns-with-dictionaries-an-alternative-to-innodb-table-compression. Yura also implemented …
[Read more]tl;dr: The source is at github.com/Preetam/explain-analyzer and you can try it out here.
I read Performance Impacts of Data Volume a few weeks ago on “Use The Index, Luke!” and found the whole workflow really fascinating. Here’s the first paragraph on that page:
The amount of data stored in a database has a great impact on its performance. It is usually accepted that a query becomes slower with additional data in the database. But how great is the performance impact if the data volume doubles? And how can we improve this ratio? These are the key questions when discussing database scalability.
I was thinking about this and how query EXPLAINs from a test environment can help …
[Read more]You can take down a MySQL database in multiple ways. Some obvious ways are to shut down the host, pull out the power cable, or hard kill the mysqld process with SIGKILL to simulate an unclean MySQL shutdown behaviour. But there are also less subtle ways to deliberately crash your MySQL server, and then see what kind of chain reaction it triggers. Why would you want to do this? Failure and recovery can have many corner cases, and understanding them can help reduce the element of surprise when things happen in production. Ideally, you would want to simulate failures in a controlled environment, and then design and test database failover procedures.
There are several areas in MySQL that we can tackle, depending on how you want it to fail or crash. You can corrupt the tablespace, overflow the MySQL buffers and caches, limit the resources to starve the server, and also mess around with permissions. In this blog post, we are going to show you some …
[Read more]Join Percona Chief Evangelist Colin Charles as he covers happenings, gives pointers and provides musings on the open source database community.
So we have announced the call for presentations for Percona Live Santa Clara 2018. Please send your submissions in!
As you probably already know, we have been expanding the content to be more than just MySQL and MongoDB. It really does include more open source databases: the whole of 2016 had a “time series” theme to it, and we of course love to have more PostgreSQL content (there have been tracks dedicated to PostgreSQL for sometime now). I found this one comment interesting recently, from John Arundel, “If you’re going to learn one database really well, make it Postgres.” I have been noticing newer developers jump on the …
[Read more]Happy Thanksgiving!
We know everyone likes spending quality time with their family at
the holidays. That’s why we thought you might like to start using
SQLyog MySQL GUI as you try to accomplish more work in less
time.
Get flat 30% off on SQLyog purchases and renewals. Use coupon code: TG30
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If you’re an existing customer and want to extend your license – head right away to Customer Area.
Hurry up, this offer is valid until 23rd November, 23:59 PST.
Cheers,
Team SQLyog
Index dives are performed during the optimization phase to help decide which index to use. Currently when user specifies FORCE INDEX, optimizer still always calculates cost using index dives. Under some circumstances it is possible to avoid the index dives and this could speed up execution.…
Dear MySQL users,
The MySQL developer tools team announces 6.3.10 as our GA release
for
MySQL Workbench 6.3.
For the full list of changes in this revision, visit
http://dev.mysql.com/doc/relnotes/workbench/en/changes-6-3.html
For discussion, join the MySQL Workbench Forums:
http://forums.mysql.com/index.php?152
Download MySQL Workbench 6.3.10 GA now, for Windows, macOS
10.11+,
Oracle Linux 7, Fedora 26 and 27, Ubuntu 16.04 and 17.10
or sources, from:
http://dev.mysql.com/downloads/tools/workbench/
Enjoy!
Changes in MySQL Workbench 6.3.10 (2017-11-15)
Bugs Fixed
* Performance information within the Administration –
Dashboard tab demonstrated a slow rate of refresh on
hosts running macOS High Sierra. (Bug #26921498)
* Tooltips within the Administration – Dashboard tab did
not display when the mouse pointer …
