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How to Write Seemingly Unhygienic and Referentially Opaque Macros with Syntax-rules

How to Write Seemingly Unhygienic and Referentially Opaque Macros with Syntax-rules By Oleg Kiselyov This paper details how folklore notions of hygiene and referential transparency of R5RS macros are defeated by a systematic attack.Show More Summary

Read SQLite Database from Android Asset Resource

Demonstrates a method to manipulate SQLite databases located in the asset folder

Hello world!

Welcome to WordPress. This is your first post. Edit or delete it, then start writing!

Percona Live 2018 Featured Talk: Deep Dive into the RDS PostgreSQL Universe with Jignesh Shah

Welcome to another interview blog for the rapidly-approaching Percona Live 2018. Each post in this series highlights a Percona Live 2018 featured talk at the conference and gives a short preview of what attendees can expect to learn from the presenter. Show More Summary

FLUSH and LOCK Handling in Percona XtraDB Cluster

In this blog post, we’ll look at how Percona XtraDB Cluster (PXC) executes FLUSH and LOCK handling. Introduction Percona XtraDB Cluster is a multi-master solution that allows parallel execution of the transactions on multiple nodes at the same point in time. Show More Summary

Tech jobs: How to recruit and retain the best IT workers

Finding and keeping the right people is always a challenge: here's how some top business leaders approach recruiting and retaining tech staff.

Representative Line: An HTTP Code

Peter B’s company didn’t have the resource availability to develop their new PHP application entirely in-house, and thus brought in a Highly Paid Contractor™ to oversee that project. This story could end here, and you could fill in the...Show More Summary

3 Best JVM Languages That Every Java Developer Must Know

If you want to learn Java programming for enhancing your knowledge and skill but you are not aware which programming language to select then you are welcomed over here to read this blog. There are three JVM languages that are best suited for Java programmers in 2018. Show More Summary

Activity Recognition’s new Transition API makes context-aware features accessible to all developers

Posted by Marc Stogaitis, Tajinder Gadh, and Michael Cai, Android Activity Recognition Team Phones are our most personal devices we bring with us everywhere, but until now it's been hard for apps to adjust their experience to a user's continually changing environment and activity. Show More Summary

Gearographic Curves - Part 2

Continue defining and presenting Gearographic curves from the simplest to the most intriguing. Offering web-pages and R scripts used to illustrate different aspects of it.

Using Different Mount Points on PMM Docker Deployments

In this blog post, we’ll see how to use different mount points on PMM Docker deployments (Percona Monitoring and Management). This is useful if you want to use other mount points for the different directories, or even if you want toShow More Summary

Percona Blog Poll: What Percona Software Are You Using?

This blog post contains a poll that helps us find out what Percona software the open source database community is using. Nearly 20 years ago, Netscape released the source code for its Netscape Communicator web browser. This marked one of the biggest moments in “open source” history. Show More Summary

Turn your Raspberry Pi into a portable Touchscreen Tablet with SunFounder's RasPad

I was very fortunate to get a preview version of the "RasPad" from SunFounder. Check it out at and at the time of these writing they have a Kickstarter I'm backing! I've written a lot about Raspberry Pis and the cool projects you can do with them. Show More Summary

Effective Tactics For Earning High-Quality Links

Earning high-quality links is one of the best ways to improve your SEO strategy. This is why we have put together a few effective tactics and best practices that can help you take your SEO to the next level! The post Effective Tactics For Earning High-Quality Links appeared first on Mobile App Development & Design Company - Snyxius.

Webinar Thursday, March 22, 2018: Percona XtraDB Cluster 5.7 with ProxySQL for Your MySQL High Availability and Clustering Needs

Please join Percona’s Ramesh Sivaraman (QA Engineer) and Krunal Bauskar (Software Engineer, Percona XtraDB Cluster Lead) as they present Percona XtraDB Cluster 5.7 with ProxySQL for Your MySQL High Availability and Clustering Needs on Thursday, March 22, 2018 at 8:30 am PDT (UTC-7) / 11:30 am EDT (UTC-4). Percona has developed Percona XtraDB Cluster (based […]

Percona XtraDB Cluster, MySQL Asynchronous Replication and log-slave-updates

Recently, I’ve been looking into issues with the interactions between MySQL asynchronous replication and Galera replication. In this blog post, I’d like to share what I’ve learned. MySQL asynchronous replication and Galera replication interactions are complicated due to the number of factors involved (Galera replication vs. Show More Summary

How to Speed Up Pattern Matching Queries

From time to time I see pattern matching queries with conditions that look like this: “where fieldname like ‘%something%’ “. MySQL cannot use indexes for these kinds of queries, which means it has to do a table scan every single time. (That’s really only half true — there are the FullText indexes. In another blog […]

Percona Toolkit 3.0.8 Is Now Available

Percona announces the release of Percona Toolkit 3.0.8 on March 16, 2018. Percona Toolkit is a collection of advanced open source command-line tools, developed and used by the Percona technical staff, that are engineered to perform a variety of MySQL®, MongoDB® and system tasks that are too difficult or complex to perform manually. With over 1,000,000 downloads, Percona […]

Saw Percona at SCaLE 16x? Come See Even More at Percona Live 2018!

Did you see Percona at SCaLE 16x? I spent a couple of days there learning about open source software, databases, and other interesting topics. You can get even more open source database information at Percona Live 2018. SCaLE is the largest community-run open-source and free software conference in North America. It is held annually in […]

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