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Mads Kiilerich

db: drop most lazy joins

Lazy joins will in some cases turn small selects into joins that returns huge
amounts of redundant data - increasingly bad as the repo size increases.

Lazy joins should only be used after careful analysis and with comments
explaining the case.

This change will make some operations faster and probably also make some
operations slower. Performance regressions would have to be analyzed and
addressed separately ... and differently.

.. _git_support:

===========
GIT support
===========


Git support in Kallithea 1.3 was enabled by default. You need to have a git
client installed on the machine to make git fully work.

Although There is one limitation on git usage.

- large pushes requires a http server with chunked encoding support.

if you plan to use git you need to run Kallithea with some
http server that supports chunked encoding which git http protocol uses,
i recommend using waitress_ or gunicorn_ (linux only) for `paste` wsgi app
replacement. Starting from version 1.4 waitress_ is the default wsgi server
used in Kallithea.

To use, simply change change the following in the .ini file::

    use = egg:Paste#http

to::

    use = egg:waitress#main

or::

    use = egg:gunicorn#main


And comment out bellow options::

    threadpool_workers =
    threadpool_max_requests =
    use_threadpool =


You can simply run `paster serve` as usual.


You can always disable git/hg support by editing a
file **kallithea/__init__.py** and commenting out backends

.. code-block:: python

   BACKENDS = {
       'hg': 'Mercurial repository',
       #'git': 'Git repository',
   }

.. _waitress: http://pypi.python.org/pypi/waitress
.. _gunicorn: http://pypi.python.org/pypi/gunicorn