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AppSignal
AppSignal

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Skylight
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AppSignal vs Skylight: What are the differences?

AppSignal: Monitoring for Ruby and Elixir. By developers, for developers. AppSignal gives you and your team alerts and detailed metrics about your Ruby or Elixir application Sensible pricing, no aggressive sales & support by developers.; Skylight: The smart profiler for your Rails apps. Skylight is a smart profiler for your Rails apps that visualizes request performance across all of your servers.

AppSignal and Skylight can be categorized as "Performance Monitoring" tools.

Some of the features offered by AppSignal are:

  • Track errors
  • Performance Monitoring
  • Compare deploys. Monitor background jobs.

On the other hand, Skylight provides the following key features:

  • Skylight looks at how your code is behaving in production, alerting you to improvements you can make before they become showstoppers.
  • Skylight tells you exactly how your app is spending its time where it matters most鈥攊n your production environment
  • Pricing starts at $20 for the first million requests, with automatic discounts for high-volume customers

"Easy setup" is the top reason why over 5 developers like AppSignal, while over 10 developers mention "Beautiful UI" as the leading cause for choosing Skylight.

StackShare, Inside.com, and Firecracker are some of the popular companies that use Skylight, whereas AppSignal is used by Publitas, Tolq, and inkl. Skylight has a broader approval, being mentioned in 39 company stacks & 5 developers stacks; compared to AppSignal, which is listed in 24 company stacks and 5 developer stacks.

- No public GitHub repository available -
- No public GitHub repository available -

What is AppSignal?

AppSignal gives you and your team alerts and detailed metrics about your Ruby or Elixir application. Sensible pricing, no aggressive sales & support by developers.

What is Skylight?

Skylight is a smart profiler for your Rails apps that visualizes request performance across all of your servers.
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      What are some alternatives to AppSignal and Skylight?
      New Relic
      New Relic is the all-in-one web application performance tool that lets you see performance from the end user experience, through servers, and down to the line of application code.
      Scout
      Scout is application monitoring that points developers right to the source of problems: N+1 database queries, memory bloat, performance trends, and more. Scout eliminates much of the investigation part when performance woes occur.
      Datadog
      Datadog is the leading service for cloud-scale monitoring. It is used by IT, operations, and development teams who build and operate applications that run on dynamic or hybrid cloud infrastructure. Start monitoring in minutes with Datadog!
      ruxit
      Ruxit is a all-in-one performance monitoring solution for cloud natives. In under five minutes customizable dashboard views show you your application's performance data.
      AppDynamics
      AppDynamics develops application performance management (APM) solutions that deliver problem resolution for highly distributed applications through transaction flow monitoring and deep diagnostics.
      See all alternatives
      Decisions about AppSignal and Skylight
      Jerome Dalbert
      Jerome Dalbert
      Senior Backend Engineer at StackShare | 3 upvotes 70.9K views
      atStackShareStackShare
      Heroku
      Heroku
      New Relic
      New Relic
      Skylight
      Skylight
      Rails
      Rails
      Pingdom
      Pingdom
      Slack
      Slack

      We currently monitor performance with the following tools:

      1. Heroku Metrics: our main app is Hosted on Heroku, so it is the best place to get quick server metrics like memory usage, load averages, or response times.
      2. Good old New Relic for detailed general metrics, including transaction times.
      3. Skylight for more specific Rails Controller#action transaction times. Navigating those timings is much better than with New Relic, as you get a clear full breakdown of everything that happens for a given request.

      Skylight offers better Rails performance insights, so why use New Relic? Because it does frontend monitoring, while Skylight doesn't. Now that we have a separate frontend app though, our frontend engineers are looking into more specialized frontend monitoring solutions.

      Finally, if one of our apps go down, Pingdom alerts us on Slack and texts some of us.

      See more
      Sebastian G臋bski
      Sebastian G臋bski
      CTO at Shedul/Fresha | 4 upvotes 293.1K views
      atFresha EngineeringFresha Engineering
      CircleCI
      CircleCI
      Jenkins
      Jenkins
      Git
      Git
      GitHub
      GitHub
      New Relic
      New Relic
      AppSignal
      AppSignal
      Sentry
      Sentry
      Logentries
      Logentries

      Regarding Continuous Integration - we've started with something very easy to set up - CircleCI , but with time we're adding more & more complex pipelines - we use Jenkins to configure & run those. It's much more effort, but at some point we had to pay for the flexibility we expected. Our source code version control is Git (which probably doesn't require a rationale these days) and we keep repos in GitHub - since the very beginning & we never considered moving out. Our primary monitoring these days is in New Relic (Ruby & SPA apps) and AppSignal (Elixir apps) - we're considering unifying it in New Relic , but this will require some improvements in Elixir app observability. For error reporting we use Sentry (a very popular choice in this class) & we collect our distributed logs using Logentries (to avoid semi-manual handling here).

      See more
      Interest over time
      Reviews of AppSignal and Skylight
      Review ofSkylightSkylight

      If you follow the registration flow you end up with running analytics virtually in a minute. Awesome first experience.

      I don't have my application in production so I needed to enable skylight in development, but Skylight navigated me nicely to the exact paragraph of a documentation, which helped.

      How developers use AppSignal and Skylight
      Avatar of StackShare
      StackShare uses SkylightSkylight

      When we were facing performance issues with the new StackShare app. We originally thought it was a server issue. So we did quite a bit of research to see how many dynos we should be using for the sort of application we have and traffic profile. We couldn鈥檛 find anything useful online so I ended up asking my buddy Alain over at BlockScore. After a quick convo with him, I knew we should be totally fine with just 2 dynos.

      We also tested the theory by increasing the number of dynos and running the load tests. They had little to no effect on error rate, so this also confirmed that it wasn鈥檛 a server issue.

      So that meant it was an application issue. New Relic wasn鈥檛 any help. I spoke with another friend who suggested we use a profiler. We totally should have been using one all along. We added mini-profiler, which was great for identifying slow queries and overall page load times. We also had the Rails Chrome extension so we could see how long view rendering was taking. So we cleaned up the slowest queries.

      We tried to use mini-profiler in production on the new StackShare app and for some reason, we couldn鈥檛 get it to work. We were in a time crunch so I asked Alain what they used and he said that they use Skylight in production. Funny enough, I remembered the name Skylight because we listed it on the site a while back. So we did that, and at first we couldn鈥檛 really see how it was useful. Then we realized what we were seeing were a ton of repeat queries on some of the pages we load tested.

      Skylight is cool because it sort of gives you the full MVC profile. We were able to pinpoint specific db queries that being repeated. So we cleaned those up pretty quickly. But then we noticed the views were taking up all the load time, so we start implementing caching more aggressively. After we cleaned up the db queries and added more caching, our pages went from this: skylight1 to this: skylight2

      Skylight ended up being super useful. We use it in production now.

      Avatar of Hund
      Hund uses SkylightSkylight

      An essential for determining production performance. It provides us with clear insights into what might be slowing down responses so we know exactly what to fix.

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