Midnight strikes, I lose the wager, woken by a screeching pager, Scarlet hue means issue’s major, major OOMing on the node. SSH into the victim, tail and grep per playbook’s dictum, ‘Til revealed is cache eviction as what crumbled ‘neath the load. Run a dump of heap and threading, start the steps for shedding load. Who hath merged this wretched code? Bleary eyes see dashboards healing, weary mind’s still looping, reeling, Ired at some dev who’s stealing hours from my restful mode. Fueled by spiteful indig[...]

Seeing the popularity of elmish architecture and attempts at implementations of backends based on it (or any unsupervised cooperative actor loops) I thought I’d share my thoughts. Desirable characteristics Most naive implementations of synchronous (HTTP/RPC) APIs are perfectly content to return some equivalent of 500 code at a drop of a hat. My DB timed […]

So I was bored, didn’t know what to do, started solving problems on codewars (shut up!). There was this little problem there, where they are asking you to compute , for potentially large n’s with precision. It’s easy to see that this needs to be refactored (no need to actually compute factorials), and the solution […]

Once in the past, I was wondering how many times I had written null checks in C# so far. It must have been at least ten thousand times. Later, I discovered F#, which avoids null in most cases. Seeing that "in principle, it can be done in .NET languages", I wrote a Visual Studio User Voice suggestion to add compile-time null reference checking to C#. The suggestion quickly rose to the top and stayed there until today. Finally... Six yea[...]

Computer vision should not be confused with image processing (as we all know). I love building computer vision pipelines, but sometimes menial tasks of pure image processing, automated editing come up. Suppose you had the same astronauts from one of the previous posts participating in a study, where they are actually filmed watching something, say […]