Tunable Consistency in MongoDB - reviewing a VLDB paper
This is a review of Tunable Consistency in MongoDB from VLDB 2019. It is worth reading and I appreciate that MongoDB has recently published several conference papers. I am not an expert on this topic....
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SQL TRIM Function Example | trim() Function In SQL
SQL TRIM Function Example | trim() Function In SQL is today’s topic. The SQL TRIM function is used for removing spaces and characters from both ends of the string. The TRIM() function removes the...
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SQL STUFF Function Example | Stuff Function In SQL Tutorial
SQL STUFF Function Example | Stuff Function In SQL Tutorial is today’s topic. SQL STUFF Function is used to replace the sequence of characters from the source string of given length from the new...
View ArticleGalera Cluster with new Galera Replication Library 3.28 and MySQL 5.6.45,...
Codership is pleased to announce a new Generally Available (GA) release of Galera Cluster for MySQL 5.6 and 5.7, consisting of MySQL-wsrep 5.6.45-25.27 and 5.7.27-25.19 with a new Galera Replication...
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How to get the most out of your EBS performance
A commonly encountered scenario is when EBS volumes are not performing at the expected theoretical performance. Let’s look at some of the potential reasons for that and how we can “fix” it. (When I...
View ArticleMySQL CURRENT_TIMESTAMP() Function
This tutorial explains how to use the MySQL CURRENT_TIMESTAMP() function with the help of examples. By using it, you can convert or display the current date and time. The output format is either...
View ArticleSetting up multi-source replication (5.7) with GTID based replication
Purpose of this guide is to show how to setup a new multi-source slave from two (or more) existing masters. We will also set up a replication filter to only apply data from some of the databases.So the...
View ArticleSep 9: Where is the MySQL team this week?!
Please find below the shows & conferences where you can find MySQL Community team or MySQL experts during the week of Sep 9, 2019: SwanseaCon, Swansea, UK, September 9, 2019 Do not miss MySQL...
View ArticlePython MySQL Query
Somebody asked me how to expand a prior example with the static variables so that it took arguments at the command line for the variables. This example uses Python 3 new features in the datetime...
View ArticleGet the most IOPS out of your physical volumes using LVM.
Hope everyone aware about known about LVM(Logical Volume Manager) an extremely useful tool for handling the storage at various levels. LVM basically functions by layering abstractions on top of...
View ArticleWhat are the MySQL Metrics That Really Make a Difference?
Author: Robert Agar MySQL is one of the most popular relational database platforms in the world. As such, it is used as the backend of many mission-critical applications across all sectors of business...
View ArticleMySQL-Router 8.0.17 Linux integration and Group Replication metadata refresh
The MySQL Router is evolving quickly, seemingly following fast in areas that matter for InnoDB Cluster. For instance, this blog post from Jan Kneschke in MySQL-Router 8.0.16 an http webserver was...
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Which Indexes are Cached? Discover with PMM.
One of the great things about working at Percona is the constant innovation that occurs as a result of a deep level of technical expertise. A more recent conversation about the Information Schema...
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What to expect at ProxySQL Technology Day in Ghent
On October 3rd ProxySQL will have it’s very first technology day. They have chosen the lovely city of Ghent, Belgium, my home town, as the place to be. For those attending Percona Live Europe in...
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MySQL Track at Oracle Code One
Oracle Code One starts September 16th and the MySQL Track is packed with interesting presentations. The session coded that start with 'DEV' are general talks. Hands on Labs start with 'HOL' and you...
View ArticleMySQL InnoDB Cluster – Easy Recovering and provisioning
Up to MySQL 8.0.16, to perform these tasks you could: - Use MySQL Enterprise Backup : - Use mysqldump Starting with MySQL 8.0.17, the easiest and recommended method is to use the CLONE feature.
View ArticleAdapting TPC-C for MongoDB - reviewing a VLDB paper
This is a review of Adapting TPC-C Benchmark to Measure Performance of Multi-Document Transactions in MongoDB which was published in VLDB 2019. I appreciate that MongoDB and Asya Kamsky took the time...
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What Changed? Find Out With Explorer Time Comparison
When you're trying to understand your systems and why they behave as they do, one of the most powerful questions is "what changed?" or "what's different?" We've offered this capability for years in...
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New Webinar: Is “Free” Good Enough for Your MySQL Environment?
Business-Critical MySQL using open source is free, right? Managed MySQL cloud services do not need database administrators, correct? Well… Think again – and join us for a new webinar with our partner...
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Comparing Galera Cluster Cloud Offerings: Part Three Microsoft Azure
Microsoft Azure is known to many as an alternative public cloud platform to Amazon AWS. It's not easy to directly compare these two giant companies. Microsoft's cloud business -- dubbed commercial...
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