Experiment to OTPify CouchDB for embedded use in Erlang applications
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ebin Initial commit. Aug 3, 2010
include Initial commit. Aug 3, 2010
priv Stub for erlang laguage support. Aug 7, 2010
Makefile Initial commit. Aug 3, 2010
NOTES Better support for compsite keys, though still not quiet right. Aug 15, 2010


 CouchDB OTP

CouchDB OTP is a project for exploring ways to OTPify CouchDB, making it easier
to use as an embeddable database in Erlang applications.


 | http://github.com/apache/couchdb
 | http://github.com/jchris/hovercraft


- Use CouchDB as a typical OTP application
- Bypass unneeded components such as HTTP/JSON support
- Use unmodified CouchDB source if possible
- Provide a documented module that exposes CouchDB's public API (`couchdb`)
- Make it easy for developers to obtain and install whatever code they need

Sample usage::

 Eshell V5.7.5  (abort with ^G)
 1> application:start(couchdb).
 2> {ok, Db} = couchdb:create_db("test").
 3> {ok, _} = couchdb:create_doc(Db, [{"name", "Damien"}]).
 4> q().

.. note::

   This project appears almost identical to Hovercraft. However, it goes a bit
   deeper with an attempt to expose CouchDB as a compliant OTP application.


CouchDB already supports Erlang applications through various HTTP interface
drivers. What's the point of embedded CouchDB as an Erlang OTP application?

- Simplify the use of CouchDB in Erlang
- Avoid unneeded overhead of HTTP/JSON
- Position Erlang to build distributed database "front ends" using CouchDB as
  the physical data store and replication engine


- Start with a skeletal OTP application
- Use Hovercraft as a reference
- Use helper or wrapper modules to map core CouchDB services into an
  application lifecycle
- Provide for standard application configuration (i.e. use of config files and
  `erl` command line options)
- Provide an API module to simplify use of CouchDB services
- Add other "features" needed to realize the project goals
- Somehow package the module for simlple usage with CouchDB

In theory this should be very doable as CouchDB already uses a number of OTP
conventions. The exercise is therefore more one of packaging and documentation
-- at least in theory.