Scout Blog
When I do a code review, one of the scariest things I see is logic like this: if Rails.env.production? do_additional_work end Why? Your beautiful tests and tightly integrated CI system won't execute that code. You won't see that code execute as you refresh your browser in development. From syntax errors ...
Rails dominates Ruby web frameworks: the next most popular framework, Sinatra, has 5% of the popularity of Rails . However, that doesn't mean non-Rails frameworks like Sinatra and Grape don't have their place. When does it make sense to step away from ActionController and use another framework? What are the ...
There are at least three ways in which you can control how much CPU time a process gets: Use the nice command to manually lower the task's priority; use the cpulimit command to repeatedly pause the process so that it doesn't exceed a certain limit; use Linux's built-in control groups, a mechanism which tells the scheduler to limit the amount of resources available to the process.
Last week we were delighted to host Ditch the Relic Hakuba. We combined foreign lands, foreign friends and a mission to make developer lives’ easier--and produced an amazing output of features, perspectives, and photos… starting with:
I'm an engineer by trade. I rely on intuition when investigating a slow Django app. I've solved a lot of performance issues over the years and the short cuts my brain takes often work. However, intuition can fail. It can fail hard in complex Django apps with many layers (ex: ...
Forecasting traffic to your web app is important for capacity planning, but generating a seasonally accurate model of your traffic is pretty daunting. If you under-forecast: Your app servers may become oversaturated, and requests will start backing up in a queue. If you over-forecast you may end up overspending.
It was a great night of chatting, coding, and application performance monitoring in Tokyo. Thanks to everyone who came out to hear our very own Naohiro present about Fast JSON:API. How does Fast JSON:API compare to other Active Model Serializers? Naohiro showed us how he switched from Jbuilder to Fast ...
A couple of years ago I visited Argentina. I have trouble enough pronouncing my limited English vocabulary and I don't speak Spanish, but after a bit of time, it was pretty easy to order food, buy groceries, and use a taxi. However, occasional hangups that happen during my regular life ...
We launched our Python agent a few months ago, supporting Python 3.4+.
Elixir has Arrived Elixir is a programming language that is beginning to gather steam. Originally released in 2011, it is a functional and dynamic language, and runs on the Erlang VM (Virtual Machine). Elixir is highly scalable and fault tolerant. In other words, Elixir is perfect for today's software landscape of microservices and cloud computing.
We've had sparkline charts of response time for a long time on our Endpoints tab, and now have extended them to the throughput column as well. Quickly isolate endpoints that are spiking with traffic, and drill down into them to diagnose. No need to hunt to see what's causing an unusual trend in traffic.
In this post, I'll show how to setup Scout to monitor the performance of SQL queries, external HTTP calls, template rendering, and more in Wagtail , a Django CMS app. Wagtail is a fast, modern...