Performance and scaling consultant who analyzes the full stack - frontend, backend and infrastructure - to generate more revenue and cut costs for businesses.
I recently added support for Ruby 2.5.4, 2.5.5 and 2.6.0-2.6.3 to rbspy, the sampling profiler written in Rust. I have replaced the original Flamegraph library by Brendan Gregg with Inferno, a Rust port. I also updated and merged a PR for handling
A week or so ago, I saw the inferno [https://github.com/jonhoo/inferno] project mentioned on the Rust subreddit. It was a rewrite of the great FlameGraph [https://github.com/brendangregg/FlameGraph] library into Rust. All of the work was being livestreamed by Jon Gjengset [https://twitter.com/Jonhoo/
When a client asks me to take a look at their site, I start off by throwing it into a bunch of services to analyze the performance. One of my favorites is GTmetrix [https://gtmetrix.com] because it has a lot of useful metrics and visualizations. The most useful one
Towards the end of last year I made Cron Heatmap [https://cronheatmap.com], a website to visualize your cron jobs and help you find hotspots. The motivation from the project comes from my work over at Nomad List [https://nomadlist.com] and Remote OK [https://remoteok.io]. There are over
My work involves clients coming to me looking for a server tune-up. One of the things I can do is to look at the software they're currently running and look at upgrading it to the latest version. A common example here is PHP. I often see people still
After arriving in KL [https://daniellockyer.com/flying-to-kuala-lumpur/], I spent the rest of the day wandering around trying to get some bearings. I had randomly booked a hotel 5 minutes away from KL Sentral, the train station you arrive at when you come from the airport. The Fajr prayer call
NYE is normally a quiet time for me. This year I went for dinner with a friend in Chiang Mai and then proceeded to head home. A couple of hours later, another friend said they were all heading out to Tha Phae on the east side of Old City to
After 2 months in Thailand, my visa was up so I had to move on to another country. I was originally looking at going to Bali, Indonesia but the recent tsunami on a neighbouring island, and their general lack of a tsunami warning system made me a little hesitant to
After running my 5km race in Phuket [https://daniellockyer.com/laguna-phuket-5k/] and flying to Bangkok to meet Jet [https://jetholt.com/exploring-bangkok/], I took the train to Chiang Mai for the second time. I tried to fix some of the issues with the journey I experienced last time but I
Part of my job as a server consultant is maintaining servers and quickly responding to issues as they arise. Yesterday, I unlocked my phone to find a message from a client. He said Apache was getting railed and the server load was over 80. I quickly opened my laptop and