Skip to main content

How To Expose the Guts of Twitter (A post about Starling)

Twitter does a lot of queuing. I mean, a lot. We know other people have a need for some good queuing, so much that Amazon even released Amazon Queue Service, not so long ago. There has never really been a common queue server, and maybe that is because its so simple that no one has really had the need to push one hard into the public eye. At least, as public as our eyes are.

Enter Starling, the internal queue system of Twitter, recently released to the public. Written in Ruby, and I don't even mind! Pointed there by my ever-pointing buddy, David Novakovic, Starling does nothing absolutely remarkable, but someone has to get the light. What is interesting is their choices. Starling uses the MemCached protocol, so your clients are probably already prepared to use it, they just need to treat the queues a little different from the mappings. The typical MemCached get-operation now removes the item from the queue. The keys function is identifiers for the queues. I don't think it could have been simpler. I'm planning to look at setting up Starling for testing on my linux servers and my Macbook, and to try and find something interesting in the way of using it. I have some plans I could utilize it in, and maybe bring it to the office later.

Now that Starling has some attention and gives us something of a standard for queue protocols (I love reusing protocols!), if anyone has different needs or just wants to scratch an itch in their language of choice, lets make the smart move and take the same protocol route. Queues may be a small thing, but its the same things we really need to agree on more. Anyone up for a MemCached-protocol to Amazon Queue Service bridge?

Comments

J said…
I wouldn't say that distributed, "reliable", low-latency queuing is exactly simple, although the concept is...

But also check out XMPP (which does wonderful queuing and presence) and AMQP... XMPP is well represented by ejabberd (Erlang), jabberd, etc.. AMQP is more-or-less represented by Apache ActiveMQ, RabbitMQ, etc. AMQP is more traditional, whereas XMPP is more SQS style.

https://stpeter.im/?p=2099

Popular posts from this blog

CARDIAC: The Cardboard Computer

I am just so excited about this. CARDIAC. The Cardboard Computer. How cool is that? This piece of history is amazing and better than that: it is extremely accessible. This fantastic design was built in 1969 by David Hagelbarger at Bell Labs to explain what computers were to those who would otherwise have no exposure to them. Miraculously, the CARDIAC (CARDboard Interactive Aid to Computation) was able to actually function as a slow and rudimentary computer.  One of the most fascinating aspects of this gem is that at the time of its publication the scope it was able to demonstrate was actually useful in explaining what a computer was. Could you imagine trying to explain computers today with anything close to the CARDIAC? It had 100 memory locations and only ten instructions. The memory held signed 3-digit numbers (-999 through 999) and instructions could be encoded such that the first digit was the instruction and the second two digits were the address of memory to operate on

The Range of Content on Planet Python

I've gotten a number of requests lately to contribute only Python related material to the Planet Python feeds and to be honest these requests have both surprised and insulted me, but they've continued. I am pretty sure they've come from a very small number of people, but they have become consistent. This is probably because of my current habit of writing about NaNoWriMo every day and those who aren't interested not looking forward to having the rest of the month reading about my novel. Planet Python will be getting a feed of only relevant posts in the future, but I'm going to be honest: I am kind of upset about it. I don't care if anyone thinks it is unreasonable of me to be upset about it, because the truth is Planet Python means something to me. It was probably the first thing I did that I considered "being part of the community" when I submitted my meager RSS feed to be added some seven years ago. My blog and my name on the list of authors at Plan

Pythonic Defined

Introduction Losing is Good Strings Dictionaries Conclusion Introduction Veterans and novices alike of Python will hear the term "pythonic" thrown around, and even a number of the veterans don't know what it means. There are times I do not know what it means, but that doesn't mean I can define a pretty good idea of what "pythonic" really means. Now, it has been defined at times as being whatever the BDFL decides, but we'll pull that out of the picture. I want to talk about what the word means for us today, and how it applied to what we do in the real world. Languages have their strengths and their idioms (ways of doing things), and when you exploit those you embrace the heart of that language. You can often tell when a programmer writing in one language is actually more comfortable with another, because the code they right is telltale of the other language. Java developers are notorious for writing Java in every language they get their hands on. Ho