Early development stage, not for production yet.

News (2024-03-09):

• ghc version upgraded to 9.4.8
• libcouchbase upgraded to 3.3.12
• a server using couchbase-simple has been running for 14 days
• segfaults have been eliminated (hopefully ;-). The last nasty segfault was double destroying Couchbase Lcb which occured after running an hour.
• with concurrents user up to 200 no memory leak detected

caveats:

• Couchbase v7.1 tested
• Couchbase v7.2 not yet tested but should be compatible
• FFI Code has to be cleaned from remnants and ugly parts
• Documentation is rudimentary

couchbase-simple provides a simple Haskell binding for libCouchbase 3.x.

• connect via pool
• ping
• set, get, remove
• query
• asynchronous IO not yet implemented

You can easily see in the sources that I looked at couchbase.hs and hedis and copied from both.

• couchbase.hs: a even simpler binding for libCouchbase 2.x (connect, set, get, remove)
• hedis: a binding for Redis KV-database via sockets; supports asynchronous access aka pipelining

The credits go to Alexander Svyazin and Falko Peters. My contribution is the upgrade to the significant API changes of libCouchbase v3.x and assembling the whole together.

Matching libCouchbase v3.x must be installed. Prerequisites:

• libevent : apt install libevent-dev
• cmake: apt install cmake

The installation was not complicated on my Ubuntu 22.4 system.

Do not forget to update the loader config: sudo /sbin/ldconfig -v

For my convienience I have included the C header files of libcouchbase in the project. You should edit the lib-dir and include-dir paths in the cabal file as needed.

build with stack:

$ stack build

You can build and run tests and benchmarks:

$ stack test $ stack bench

defaultConnectInfo (Couchbase/Connection.hs) must be adapted for running successfully: