dvirsky

45 ms·

481.
by dvirsky 10y ago
There's an error in the Primitive C types section, the width of long: > long 8 (32 bit) 8 (64 bit) the second column should be "4 (32 bit)" AFAIK, but definitely not 8 bytes / 32 bit.
482.
by dvirsky 10y ago
If I'm reading this correctly, and he set GOMAXPROC to 1, that means that Go uses one system thread, but it still serves many requests concurrently, as there is an asynchronous IO loop under the hood. Same goes for Node.
483.
by dvirsky 10y ago
10 years in my to-read pile and going strong.
484.
Active Memory Defragmentation Added to Redis(github.com)
4 points by dvirsky 10y ago|2 comments
485.
by dvirsky 10y ago
from the post sounds like it still is.
486.
by dvirsky 10y ago
It really depends on which application. In the past few years I've been mainly writing server-side infrastructure libraries and services with no GUI at all. In those cases I'm writing stuff bottom-up anyway, so while I'm writ
487.
by dvirsky 10y ago
yeah but we are human and flawed, at least I am. this is just a practice that forces me to properly test and be less lazy, because I can't test it manually and move on.
488.
Show HN: RediSearch, a Full-Text Search Redis Module(redisearch.io)
9 points by dvirsky 10y ago|0 comments
489.
by dvirsky 10y ago
I don't like to write tests ahead of code, but the idea of "Avoid running main" is very powerful and something that helps me a lot. Usually in a new project I try to just use tests as the playground for the evolving code, an
490.
by dvirsky 10y ago
In the past you could tune redis to hold a dataset larger than the memory you had, and it would swap pages on its own. About a year after this 2010 post, antirez decided to remove this completely (in redis 2.6 or 2.8, I don't remember)
491.
by dvirsky 10y ago
It is important to note that in the many years since this post, while redis has remained single-threaded - it also removed the entire concept of VM, and now works only fully in memory.
492.
by dvirsky 10y ago
It's not even that in this case - it's just SQLite with a network layer, no persistence and each operation blocks redis completely until finished.
493.
by dvirsky 10y ago
I've been working on a secondary indexing module for redis with a subset of SQL WHERE for selection predicates, if anyone's interested. It's not stable yet, but it's coming along nicely. The idea was actually NOT to crea
494.
by dvirsky 10y ago
Personally, modules have been the thing I wanted most in redis for years, and it's been a delightful experience working on modules for the past months. I really think it's a game changer for redis and I can't wait to see wher
495.
by dvirsky 10y ago
https://github.com/saginoam/RedisModuleTimeSeries
496.
by dvirsky 10y ago
Having written a project that loads Go plugins to a C app (namely redis), it's not great but in recent Go versions it's not too bad as well.
497.
by dvirsky 10y ago
I came to detest assert when I was working on a project with another guy, who used it generously, as a substitute for assertions in (non existing) unit tests. Nothing would annoy me more than working on my code, running it, and having all s
498.
by dvirsky 10y ago
Sorry, I read it as protecting their policy
499.
by dvirsky 10y ago
Not anything a company writes in their EULA is legal and/or moral just because the user agreed to it.
500.
by dvirsky 10y ago
But the phone's terms did state (according to TFA): “You may only purchase Devices for your personal use. You may not commercially resell any Device, but you may give the Device as a gift.”
501.
by dvirsky 10y ago
Perhaps it's TypeScript making the difference?
502.
by dvirsky 10y ago
> “Ten years ago, no one would predict that we could prove the correctness of a single-threaded kernel, much less a multi-core one." So apparently it's a breakthrough in this context.
503.
by dvirsky 10y ago
Or per a single user, even if all else works well: - Email account gets hacked, and you can't respond to emails anymore. - Spam filter bug filters the service's emails for 3 consecutive weeks. - You are simply hospitalized for a f
504.
by dvirsky 10y ago
it's a very low percentage of users all in all, doesn't really matter especially if you're charging by clicks and not impressions.
505.
by dvirsky 10y ago
Well, I answered the rest of the questions perfectly and exactly like he expected, so it might have helped.
506.
by dvirsky 10y ago
I saw him once in 2009. Indeed maybe the best show I've ever seen. Part of it was due to the fact that I sort of knew I would never get to see him again, and part of it because it was a truly great performance.
507.
by dvirsky 10y ago
On my phone screen a Google recruiter asked me "how much is 2^24", and I knew the answer by heart and answered immediately. So he asked "how did you figure this out so fast?". I told him I didn't, I just remember al
508.
by dvirsky 10y ago
It's just a phone screen. I got some of these questions from a Google recruiter on a phone screen, for an SRE manager position. Actually the recruiter asked me if I prefer questions focusing on system or on complexity and general CS t
509.
by dvirsky 10y ago
yeah but what if it's this or being hunted?
510.
by dvirsky 10y ago
Anyway, if you want to continue the discussion further, we can take it to reddit (I haven't posted the benchmarks there yet, it's a good idea anyway), or just email me, dvir at redis labs.

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