Rails Performance and the root of all evil

Donald Knuth wrote an often quoted paper in the 70s which is still referenced when talking about performance in web apps today. Premature optimization is the root of all evil. In my line of work, it is sometimes invoked as a sort of apology; an excuse for why more time ... Read more

Monitoring Sidekiq Jobs

Teaser for a soon-to-be released capability: Overview metrics for all your background jobs Chart throughput, latency, error rate, and more. Detailed drill-down on slow jobs See what's making the job slow, identify N+1 queries, and more. Tech preview - want in? Background job monitoring currently supports sidekiq, and is tech ... Read more

Overhead Benchmarks: New Relic vs. Scout

High monitoring overhead is a silent killer : your app's requests take longer, throughput capacity shrinks, end users requests start stacking up in a request queue, you react by provisioning more servers, and finally, more servers == more $$$. So how does Scout's overhead compare with the competition? To find ... Read more

State of the 2016 Rails Stack

What's a Rails stacks look like in the wild these days? Most popular Rails version? Most popular Ruby? Is Delayed Job still hanging on? If you're curious about the above, you've come to the right place. We collect gems used on the apps we monitor at Scout to assist with ... Read more

4 ways to get the most out of your Rails logs

Logging is the lowest common denominator of monitoring - it's low effort and low overhead. You can put ANYTHING into a log file (sans animated GIF memes - save that for Slack). The downside of being a logging addict: logs can quickly become a noisy mess. Digging through logs while ... Read more

Pillars of the Rails Monitoring Stack: 2018 Edition

Here's a behind-the-scenes rundown of how we ensure our apps are in peak condition in 2016* 2018. *Ed. Note- this is largely unchanged from 2016, so I've updated this post with our 2018 stack. Focus Service Approx. Price Uptime Pingdom $15/mo App Monitoring Scout $150/mo Log Monitoring ELK Stack $150/mo ... Read more

StackProf: The Holy Grail of Rails Profiling

Our Stackprof-inspired profiler, ScoutProf, is now in BETA. See our docs to get started. The holy grail of performance profiling is finding a tool that's safe to run in production. A tool that identifies slow code as it works "in the wild". Profiling code locally is never as good as ... Read more

Rails App Monitoring (APM) with StatsD

Application monitoring doesn't have to be complicated. Introducing scout_statsd_rack , a drop-in Ruby gem for monitoring key performance metrics in your Rails app. scout_statsd_rack leverages StatsD for lightweight Rails app monitoring via Rack middleware. Lets see how fast we can go from no monitoring to a Rails performance dashboard plus ... Read more

Where are the Rails infrastructure support firms?

There are no formal documents to sign if you and your spouse decide to have children. You don’t have to sit through an accreditation class. There is no credit check. You don’t need a high school diploma. Procreation can even happen accidentally. A baby is a lot like a Rails ... Read more

5 Pillars of Rails Cluster Monitoring

Photo by mollypop My how you’ve grown! A couple of years ago your little Rails app was on a single server. Now you’re on a whole cluster – you’ve got web servers, database servers, HAProxy servers, and more. I’m so proud of you! Monitoring your Rails cluster has gotten more ... Read more

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