Viewing profile — mumrah

Apache Kafka 4.0 was just released. This is a major release which includes some significant improvements: * Removal of Apache ZooKeeper as a dependency * New consumer group protoco…

Not for long. An early access version of KIP-932 Queues for Kafka will be released in 4.0 in a few weeks. https://cwiki.apache.org/confluence/display/KAFKA/KIP-932%3A...

Part of the new design is that brokers and controllers can be run on separate JVMs.

Under 100 for radio and TNC, sure. See the NinoTNC http://tarpn.net/t/nino-tnc/n9600a/n9600a_info.html . For radios we use second-hand commercial radios that we reprogram for Ham u…

I'm part of a TARPN and the main thing we do is chat. There is a simple chat program that runs on the network so we can do realtime multi-user chat. It's pretty fun. BBS is also a …

I think it's something like 30W over a single ethernet cable. I'm running a few devices with PoE that are not network enabled, just conveniently located near an ethernet cable that…

Packet radio has made some progress since the 80s :). Here in North Carolina we have a network called TARPN http://tarpn.net/t/packet_radio_networking.html . We use re-purposed com…

Ordered a RPi Zero W from Adafruit on a Saturday, got it on a Wednesday. Took about two hours to get through a headless install of Raspbian [1], most of which was fighting with my …

I would guess they have injectors for the filling at the centers of those cells. A Voronoi edge is equidistant from the two points it bisects, so it kind of makes sense that this w…

If you like this, I recommend checking out Learn You Some Erlang (for great good) http://learnyousomeerlang.com/content

It's for sale on Amazon: https://www.amazon.com/Calculus-Made-Easy-Silvanus-Thompson/...

Cheapest? A Chinese radio off Amazon, e.g., https://www.amazon.com/BaoFeng-UV-5R-Dual-Radio-Black/dp/B00... . This will allow you to tune in to local repeaters and listen. N.B., yo…

Was this done using the DVDs? I'm curious about any potential licensing issues with the screen caps and subtitles. Did you have to get permission/sign something - or does this fall…

I'm skeptical how a small form factor oven like this could provide even heating that is required for many kinds of baking, even if it has convection fans. Also, having such a small…

Lucene has had this capability for a while now. A regexp query (as defined by the RegExp class) is compiled into an automaton for quick comparison with the inverted index, also rep…

My guess would be that they went with C to make it easier to hook into existing data systems like MySQL or Redis.

If you want sequential IDs with no chance of collisions, read up on "flake" IDs * https://blog.twitter.com/2010/announcing-snowflake * http://engineering.custommade.com/simpleflake…

Neat! I made one of these in Java a while back after reading the snowflake Twitter post (which has since been removed). Looks like Twitter has retired Snowflake: https://github.com…

Anyone know how this compares to the FST/DFA stuff in Lucene 4.x?

Part of the point of things like Chromecast is to avoid having to hook things up to a TV.

It's a better experience when you're dealing with a complete file and not an in-progress transcode anyways. With a file you can seek and pause/resume. That's much, much harder with…

I got something similar working in Java by simply exec'ing ffmpeg and getting a handle on the stream. Not being able to seek kind of sucks, and Chromecast does not like infinite st…