jhgg

35 ms·

331.
by jhgg 10y ago
We are experimenting with webworkers to power a very complicated autocomplete and scoring system in our client. So far so good. We're able to keep the UI running at 60fps while we match, score and sort results in a web-worker.
332.
by jhgg 10y ago
Discord | Lead Software Engineer (Frontend/Backend/Native) | SF | Full Time On Site Here’s a crazy idea: build a voice and text chat app people actually care about with a remarkable, creative, hilarious (read: insane) team. https
333.
by jhgg 10y ago
There's a node module, but this is a quick hack to do it. Relatively low cost if this function isn't getting called too much. Combining this + some basic memoization would probably be the easiest and most performant solution. I im
334.
by jhgg 10y ago
I wonder if Skylake would offer a material improvement for our workload. We don't necessarily use AVX-512, but we do use a heck of a lot of CPU resources on the current architecture. We are a python/elixir shop. Great job GCP team
335.
by jhgg 10y ago
At work, we dispatch messages to clients using websockets (on a pretty massive scale). >How do you deal with the potential that a browser goes offline and misses messages? It depends on how long the browser goes offline for is it a trans
336.
by jhgg 10y ago
We have a real time distribution system written in Erlang/Elixir that keeps the clients in sync. We do not poll for messages. That wouldn't work at our scale :)
337.
How Discord Stores Billions of Messages Using Cassandra(blog.discordapp.com)
438 points by jhgg 10y ago|155 comments
338.
by jhgg 10y ago
My post above describes the main reason for moving from redis - the fact that data for inactive users doesn't need to be memory perpetually. :P
339.
by jhgg 10y ago
Memory & CPU. We knew we'd be running into both eventually - without adding additional redis instances (memory growing way faster than CPU usage in this specific scenario). When it was initially built, it was basically a bunch of r
340.
by jhgg 10y ago
We've recently had to move away from redis for persistent data storage at work too - opting instead to write a service layer ontop of cassandra for storing data. Redis was tremendous in our journey up there - but one of the shortcoming
341.
by jhgg 10y ago
Perhaps I'm a bit dense here, but in the proposed attack scenario, couldn't the compromised 1Password application just send all passwords to a malicious server when the vault is unlocked - and assuming you have your Dropbox crede
342.
by jhgg 10y ago
Not for long - https://blog.discordapp.com/year-end-teaser-search-screen-sh...
343.
by jhgg 10y ago
Games are the target niche - but really - anyone can use it. At the end of the day - it's just a chat product - that has some gamer centric features.
344.
by jhgg 10y ago
This is indeed the case. Our real time system is outside of firebase and APNS and it handles the actual real time updates of chat state once the app is launched. We also have a delivery system that accounts for network cuts/switches an
345.
by jhgg 10y ago
It is constant - but iirc, it'd be trivial to make a dynamically scaling pool. At the end of the day, a pusher is just a TCP connection. Keeping a pool of fixed size and planning capacity around scaling horizontally is a perfectly acce
346.
by jhgg 10y ago
At some point, when a system has entered a failure mode for a while, it makes sense to start shedding load, rather than attempting to deliver every single push notification. Also worth mentioning, a minute of downtime is already a million b
347.
Gamer chat app Discord hits 25m users, can now be used in developers’ own games(techcrunch.com)
5 points by jhgg 10y ago|0 comments
348.
by jhgg 10y ago
What bugs ail you friend? Looking to see where and if they are on our bug tracker.
349.
by jhgg 10y ago
ATM Machine = Automated Teller Machine Machine.
350.
by jhgg 10y ago
We use EK but not L, instead writing own daemon that rsyslog sends loglines to and bulk inserts them into ES. We use kibana & grafana for visualization. We index approx 20k log-lines per sec (at peak) w/o a sweat (whereas logstash
351.
by jhgg 10y ago
How does one become an OVH VIP?
352.
by jhgg 10y ago
It depends on if you're CPU bound or IO bound. If you're CPU bound - switching to an async based web framework may not help that much. If you're IO bound, and you're using synchronous web workers that are sitting idle wa
353.
by jhgg 10y ago
We use React Router on our project. Looks like 4.0 does break pretty much everything. My thoughts on the upgrade are pretty much: - Do we actually need to upgrade? Old react router works fine. - If we do need to upgrade - how long will it t
354.
by jhgg 10y ago
Lots of poorly written webapps give Electron a bad name. Slack, unfortunately does have it's performance issues, but there are other popular chat apps written in Electron that are very performant, even on large teams.
355.
by jhgg 10y ago
Makes sense. Did the iops cap for fewer than 15 cores increase?
356.
by jhgg 10y ago
Does the SSD iops increase happen automatically? Or do we have to turn it on somewhere or recreate the disk? Also any plan to allow objects in GCS bucket to automatically move to nearline after a specified time, like s3 to glacier?
357.
by jhgg 10y ago
Although it's not open sourced, you should check out discord ( https://discordapp.com/ ). Although our niche is gamers, lots of people use Discord for tons of other things. We've got all those things except search (
358.
by jhgg 10y ago
Check out https://discordapp.com/
359.
by jhgg 10y ago
Since our elements have fixed height, we just do some simple maths in JS land to compute what should be visible, rather than measuring stuff using the DOM (which forces layouts).
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by jhgg 10y ago
Love your work on Immutable.JS. When I was typing out the original reply, I meant to say "Don't use Immutable.JS for small objects" but ended up putting a period in the middle... which could have led to some confusion. I&#x27

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