This is the story of how I applied basic performance analysis techniques to find a small change that resulted in a 10x improvement in CPU use for our Postgres cluster and will save Heap millions of dollars over the next year.
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Raymond Chen’s blog in particular was good enough to get me to buy his book (which definitely did not disappoint). Disclaimer: I am currently employed by Percona, although that is not my motivation for sharing this.
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Here I was again, looking at my screen in complete disbelief. This time, it was different though. My distributed web crawler seemed to be slowing down over time. Adding more nodes only had a temporary performance boost; the overall crawling speed gradually declined afterwards.
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What is Fullweb? Fullweb is a weekly newsletter. It gives you the best 5 links every week about Backend, Web Frontend, DevOps and User Experience. Who need to read it? Fullweb primarily targets Full-Stack Developers, and anybody who need to stay relevant on a wide scope of technologies.
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We’re extremely ambitious – our goal is to have Hotjar installed on 10 million sites. Having such a bold vision whilst taking a freemium approach presents huge technical challenges.
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If things work out as you’ve envisioned, there will be a time in your webapp’s lifecycle when it’s serving a large number of users.
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