Fixing Slow Databases: Improving App Performance Overnight

There’s no denying database applications have come a long way over the past few years.

Despite all the improvements, however, they’re still far from perfect—sometimes, they even feel painfully slow. A seemingly quick and easy task can end up taking hours for no good reason. The result? Angry users, suspicious managers, and a generally unhappy team.

A slow database isn’t something you can brush over. According to a SolarWinds®report, nearly one-third of data pros are responsible for over 300 databases in their organisations’ environments. Database administrators (DBAs) are already stretched incredibly thin, and—like most IT teams—they’re constantly being asked to do more with less.

Slow databases can often be accounted for. For example, it’s possible developers were only given functional requirements during the build process and no performance expectations were set. Another common hurdle is the team who wrote the query asked for a lot more data than they needed. As a general rule, if you ask for more data, you’ll spend more time waiting.

Unfortunately, even when users carefully craft a well-written SQL query, response from the database can still be sluggish. In this case, the application may perform well, but the reason for poor performance lies within the database itself. To combat this, you must first look in three places.

1. Review Your Indexes

Far too often, a task usually taking hours could instead take seconds—if only the database had proper indexes.

To boost performance, inspect the database design and make sure it has appropriate indexes. For custom-built applications, it’s also common to see duplicate

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