Howto automate MySQL slow query analysis with amazon RDS

If you’ve used relational databases for more than ten minutes, I hope you’ve heard of slow queries. Those are those pesky little gremlins that are slowing down your startup, and preventing scalability you so desperately need. Luckily there’s a solution. What I’ve found is if I send a report to developers every week, it keeps …

Connect to MySQL in the Amazon Public Cloud

Troubleshooting MySQL on Amazon can be a real test of patience. There are quite a few different things to watch out for in terms of connectivity & networking. Sometimes a checklist can help. Join 16,000 others and follow Sean Hull on twitter @hullsean. Here’s my exhaustive list of things that can block you. 1. Be …

Are SQL Databases Dead?

I like the image of this city of Mesa Verde. It’s fascinating to see how ancient cities were built, especially as an inhabitant of one of the worlds largest cities today, New York. I’m a long time relational database guy. I worked at scores of dot-coms in the 90’s as an old-guard Oracle DBA, and …

5 great things about Markus Winand’s book SQL Performance Explained

Join 12,100 others and follow Sean Hull on twitter @hullsean. 1. Covers databases broadly You may not have noticed, but there’s a whole spectrum of relational databases on offer. Of course in the database world, most get infatuated with one, and that becomes their bread & butter before long. Their life, their passion, their devotion. …

Why Oracle won’t kill MySQL

Join 15,000 others and follow Sean Hull on twitter @hullsean. 1. MySQL does not compete with Oracle It’s a myth that MySQL somehow poses a threat to Oracle. Oracle’s customers tend to be large enterprises running apps like e-business suite. These are certified to run on Oracle, and further they sit close to finance. MySQL …

3 Simple Patterns for Tighter MySQL Code

Join 8000 others and follow Sean Hull on twitter @hullsean. SQL is derided by many and for good reason. It’s key to scalability yet terribly difficult to write good code. Here’s a few quick tips to write tighter queries in MySQL 1. Get rid of those Subqueries! Subqueries are a standard part of SQL, unfortunately …

MySQL Subquery Optimization

Join 7000 others and follow Sean Hull on twitter @hullsean. MySQL’s optimizer can do a lot of things, but subqueries are not always handled well. Take a look at the IN subquery below. If you see the DEPENDENT SUBQUERY in your explain plan, you may want to take a second look. This will run slow …

3 Ways to Optimize for Paging in MySQL

Join 36000 others and follow Sean Hull on twitter @hullsean. Lots and lots of web applications need to page through information. From customer records, to the albums in your itunes collection. So as web developers and architects, it’s important that we do all this efficiently. By the way, I write an article like this every …

MySQL for Devs, DBAs and Debutantes

Join 6500 others and follow Sean Hull on twitter @hullsean. I just received my copy of the 5th Edition of Paul DuBois’ MySQL tomb. Weighing in at 1153 pages, it’s a solid text, with a very thorough introduction to the topic of administering MySQL databases. Buy the book here: MySQL 5th Edition by Paul Dubois …

How to Optimize MySQL UNION For High Speed

Join 38000 others and follow Sean Hull on twitter @hullsean. There are two ways to speedup UNIONs in a MySQL database. First use UNION ALL if at all possible, and second try to push down your conditions. By the way, I write an article like this every month, covering consulting lessons, tech trends, cloud and …