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SeaLion vs Skylight: What are the differences?
SeaLion: Quickly diagnose problems with your Linux servers. SeaLion is a cloud based system monitoring tool for Linux servers. Getting started is as easy as executing a command. It installs an agent at /usr/local/sealion-agent and runs as an unprivileged user (sealion). This agent will collect data at regular intervals across servers and this data will be available on your workspace. The latest version is shipped with 5 default services namely Apache, NGINX, MongoDB, MySQL, Redis; 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.
SeaLion and Skylight can be primarily classified as "Performance Monitoring" tools.
Some of the features offered by SeaLion are:
- Raw output. No learning curve
- Quickly identify critical issues
- Historical analysis
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—in your production environment
- Pricing starts at $20 for the first million requests, with automatic discounts for high-volume customers
Pros of SeaLion
Pros of Skylight
- Beautiful UI11
- Sort by 'agony' - lists low hanging fruit fixes8
- Made by ember.js and rails core team members8
- Actionable analytics with concrete numbers7
- Free tier6
- Shows you repeat db queries4
- Great for production use3
- Setup in a minute2
- Weekly email w/performance trends1
- Full MVC profile1
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Cons of SeaLion
Cons of Skylight
- Comparing different timeframes is difficult1
