rubyrescue

It's really a much longer story. We use Redis and Couch together. Redis for caching, Couch for long-term storage.

Whether Couch has or doesn't have Map/Reduce is irrelevant, really. Couch Map/Reduce is a toy (just like Riak) and is not to be trusted. We avoid it as much as possible.

looks interesting, thanks!

At my consulting company, Inaka, we built this originally as a side project when we were using Redis and thought we needed multi-master larger-than-RAM datasets, but then we ended up moving to CouchDB for that project.

It's currently a research project for us and we have an intern from Uppsala University working on the HA features including paxos leader election and multi-master conflict resolution. See the mutinode branch. Some people have added some additional database backends, but I don't know of any serious production users yet.

I gave a talk on it at the 2012 Erlang Factory as it's entirely Erlang-based. Here's the talk - http://vimeo.com/42630498

Benefits over Redis: Faster startup time over big datasets, pluggable backends, (eventually) Multi-master and HA (with a different approach than Redis is currently taking with Sentinel).

Drawbacks: 3x to 10x slower on all operations. We've done no work to optimize.

They could switch to edis when it gets too expensive to keep everything in memory.

for 4) - ruby style DSLs. It's something that Erlang doesn't lack in principle due to parse transformations, but in practice, the difficulty of writing parse transformations and the sense in which prolog syntax doesn't lend itself to simple "english" like DSLs means people don't use them much.

i've started using Elixir for all my side projects. It's very satisfying to use and as it sits on Erlang/OTP, you get all the power of Erlang, all the libraries, etc. It still means it's not great for math; it's too slow just like Erlang. But it has all the concurrency and stability of Erlang/OTP in a new, sexy, non-prolog language.

Further, Jose Valim (the language creator) is incredibly talented as a developer and has made rapid progress in iterating the language, and responds quickly to suggestions. The mailing list is also picking up momentum, folks are contributing ideas for how to make the language great.

Yuri (yrashk) has spearheaded the efforts around a package manager - http://expm.co/ which allows all Erlang Rebar packages plus Elixir packages. Still missing is "binary" package support but that's been a gripe about Erlang for a long time.

I believe in Erlang/OTP and I really believe Elixir has a bright future. In a few years there will be folks who build Elixir apps and don't bother to learn Erlang. This could really freak out the Erlang "old guard" - many are friends of mine - but they don't really care that much, as Erlang has has always been a niche musical instrument and Elixir is Erlang's ticket to Carnegie Hall.

it's the movie equivalent of atoi()

I read it this morning in the english Wikipedia entry for "To Kill A Mockingbird" - it's relatively common in that context.

This is interesting, but the problem is this is all a certain type of startup. Whisper, for instance, is "hot" both in funding and user growth, but it's a demographic that wouldn't trigger these indicators - kids at 19 don't have linked in, and they aren't linking their FB or Twitter accounts due to the type of app it is.

all the data is local ... and it's a lot of data

We recently built an app that tracks this based on official US government data - per the Cleary act every US college that receives Federal funds must declare their on-campus crime rate. https://itunes.apple.com/us/app/campus-sentinel/id513108130?... - you can compare MIT to other campuses.

Thanks for clarifying! It's like i had all the concepts there - out of band and SS7 - but didn't really get the details. This is why I love HN.

that's redmond in the foreground and seattle in the background

SMS does use the out of band but it was more of an accident of the SS7 protocol. you should read up on SS7 - http://en.wikipedia.org/wiki/Signalling_System_No._7

That's the best one sentence summary of why it's deflationary, actually.

Outside of the US WhatsApp rules with an iron fist. Every non-tech person I know uses it. I hear it dropped in casual conversation at the table next to me in restaurants. It's got a public mindshare greater than Skype. And once all your friends are on it, it's not so easy to switch.

To take the code focus for a second, this would be a great win for Erlang in that it would put a very high-profile Erlang powered app inside Google.

no it's a limitation of iOS - which you could argue is by design. the app is just not notified, no matter if it's urban airship or your_custom_app

...if you create a page that is designed to be public.

This is NOT a data leak. The guys building coinbase are incredibly savvy, dedicated founders. Please don't overreact without knowing what you are taking about. These pages are supposed to be searchable because they're like mini-store checkout pages.

The shear breadth of his career is just astounding, his consistency in reviewing film after film for years. Inspiring for all of us.

SEEKING NEW PROJECTS - Inaka is a Remote Bootstrapper. We replace or supplement a CTO for funded startups. Our last client we took from no code to 1 billion pages/month. We'll come on-site and we have a remote team in Buenos Aires, Argentina. chad@inaka.net

There's so much hyperbole in here it's hard to know what parts to take seriously. I do believe the 'fix is in' but also don't know how to read someone who is afraid of austerity but also uses the word keynesian as an epithet. Is government spending bad? is it good? Would the 2008 crisis really have just evaporated so easily? Would anyone take that chance?

Inaka does daily standups, at 11, in a HipChat room. You should know what you're working on in the morning before then, that gives you time to get some work done, take a 1 minute break and announce what you're doing. It's pretty rare we don't know what that list is anyway but it's a good synchronization point. If something is off or questions ensue, we meet in person.

The history of snake-oil salesmen is well documented. http://www.authentichistory.com/1898-1913/2-progressivism/8-...

i used to use them extensively. unless something has radically changed, they cost nothing in the svn repository but when you pull them down, you have multiple copies on disk which takes double the space because of the way a branch appears like a separate folder in your working copy. am i missing something?

500MB branch in git - git checkout -b mybranch master == 500MB 500MB branch in svn - svn copy ... == 1GB

the achilles heel of svn is branches cost 100% of the branched repository. even an svn repo with one user can be prohibitively large.

even in a corporate lan environment just pulling down an svn repository can take far too long

yeah i was going to say that i know they aren't truly julian dates but... i figured someone else would point it out. i guess you could think of it as the last 3 digits are julian dates but they just reset every year?

yep that's it...