Database

When to Use explain() in MongoDB

06/19/17 In MongoDB, the command db.collection.explain() is an important operation to help you understand exactly how your queries execute and behave. Once you have a grasp of how …

Why WiredTiger Is the Default MongoDB Storage Engine

06/14/17 When we published our blog post about working-sets in MongoDB, one of our colleagues told us he’d been aware that MMAPv1 had previously been MongoDB’s default storage engi…

Understanding Whether Your MongoDB Indexes Are Effective

06/09/17 One of the variables that can have a major impact on your MongoDB performance is the way you implement indexes. While it’s a good idea to use indexes in some form, you nee…

How to Tell if Your MongoDB Server Is Correctly Sized For Your Working Set

06/05/17 For MongoDB users, knowledge of working sets is critical. Understanding the interactions between your working set and physical memory can make a major difference in how yo…

Correlated Metrics in Monitoring

04/14/17 If you work with monitoring or monitoring tools much, you’ve probably seen the phrase “correlating” here and there. For example, monitoring vendors often say you can use t…

Common Pitfalls When Using database/sql in Go

03/23/17 We’re huge fans of the Go language and its database access library, database/sql. As you’ve probably seen firsthand, the surface area of database/sql is pretty small, but …

Shopify Eliminates High Latency Queries From Redis and MySQL

02/11/17 As intuitive and streamlined as ecommerce technology might seem from the user’s perspective, it involves so much data that engineering ingenuity and smart database managem…

JSON Support in PostgreSQL, MySQL, MongoDB, and SQL Server

02/10/17 If you’ve been watching the evolution of database technologies over the past few years, you’ve seen how quickly JSON has quickly cemented its position in major database se…

Etsy’s Use of Performance Testing in Development

02/02/17 In a recent case study, we profiled Etsy and learned about how a high-performance data platform helps keep Etsy’s global community engaged. In that study, Etsy’s engineeri…

Three Things That Differentiate Amazon Aurora From MySQL

01/27/17 It’s not always obvious what makes one database type distinct from another. What are the most significant ways Amazon Aurora is different from MySQL? Clear separators aren…

SQL Server Alerts: Best Practices

01/23/17 Over the last six and a half years, I’ve spent a great deal of my time here at SentryOne discussing SQL Server alerts with customers, evaluators, and coworkers. The purpos…

5 Tips for DBAs on Working Remotely

01/19/17 For many professionals who’ve never had the chance to try it, full-time remote work might seem like pure upside—even luxurious. On days when rush hour commutes, shared fri…