Comments on: Extending Tokyo Cabinet DB with Lua

By: Ilya Grigorik

Ilya Grigorik — Sun, 30 Aug 2009 23:12:31 +0000

Awesome! Added your example to the tokyo-recipes rdoc file. :-)

By: Marco Lazzeri

Marco Lazzeri — Sun, 30 Aug 2009 16:18:29 +0000

Ilya, thanks for your answer. Following your suggestion I kept trying and…

$ curl -i -X POST -H “X-TT-XNAME: echo” http://localhost:1978/foo -d “bar”

HTTP/1.1 200 OK
Content-Type: application/octet-stream
Content-Length: 7

foo:bar

This is awesome!

By: Ilya Grigorik

Ilya Grigorik — Sun, 30 Aug 2009 02:25:13 +0000

Marco, that’s a great question. I pinged Mikio to confirm, but it does look like there is some support for this. From the docs:

“POST” should have the header “X-TT-XNAME” whose value stands for the function name to be called. “POST” can have the header “X-TT-XOPTS” whose value stands for bitwise-or options of 1 (record locking) and 2 (global locking).

By: Marco Lazzeri

Marco Lazzeri — Fri, 21 Aug 2009 15:04:44 +0000

Great article! …as usual, thank you Ilya ; )

I was wondering: is it possible to call the Lua extensions using the REST interface?

By: X

Tue, 04 Aug 2009 00:19:45 +0000

Wow Lua is a great languange. Much better than Ruby.

It’s amazing how under-hyped it is.

By: Dev Blog AF83 » Blog Archive » Veille technologique : OS, Navigateurs, HTML, CSS, Ruby, Rails, Javascript, Langages, VCS, DB, Geo

Tue, 28 Jul 2009 16:10:02 +0000

[...] http://www.igvita.com/2009/07/13/extending-tokyo-cabinet-db-with-lua/ : un tutorial sur l’ajout de fonctions à Tokoy Cabinet avec Lua [...]

By: rufus-tokyo 1.0.0 « processi

rufus-tokyo 1.0.0 « processi — Thu, 23 Jul 2009 01:24:55 +0000

[...] those of you interested in extending Tokyo Tyrant via Lua functions, I warmly recommend Ilya Grigork’s post about [...]

By: Ilya Grigorik

Ilya Grigorik — Wed, 22 Jul 2009 00:18:02 +0000

Pedro, my understanding is that the Lua extensions have to be loaded at startup. I haven’t seen any mechanism to load it additional ones at runtime. Having said that, now I’m curious.. because that would certainly be a nice addition.

For benchmarks, there are a few that I’ve done myself, and more available on github. Take a look at my original post on TC, there are a couple of links in the comments.

As far as versioning goes, the BTree engine is certainly one route. Alternatively, can also be implemented as an extension, of course!

By: pedro mg

pedro mg — Tue, 21 Jul 2009 14:51:03 +0000

Hi, can (Lua) extensions be dynamically loaded into the server ? Or does it need to be restarted ?

Did you benchmark TC (BTree+) against CouchDB ? One cool feature in CouchDB is the document “versioning” ability. Updates on TC get to be versioned ?

By: Eivind Uggedal

Eivind Uggedal — Mon, 20 Jul 2009 10:29:42 +0000

Ilya: No, I’m not using it in production. I did some refactorings and by the help of _fwmkeys() I was able to find a solution not needing sets. Serialized values can be a problem since I’m doing multi-master replication with relatively high latency (across the US and soon Europe).