# Synapse's architecture is quite RAM hungry currently - we deliberately cache
# a lot of recent room data and metadata in RAM in order to speed up common
# requests. We'll improve this in future, but for now the easiest way to either
# reduce the RAM usage (at the risk of slowing things down) is to set the
# almost-undocumented SYNAPSE_CACHE_FACTOR environment variable. Roughly
# speaking, a SYNAPSE_CACHE_FACTOR of 1.0 will max out at around 3-4GB of
# resident memory - this is what we currently run the matrix.org on. The
# default setting is currently 0.1, which is probably around a ~700MB
# footprint. You can dial it down further to 0.02 if desired, which targets
# roughly ~512MB. Conversely you can dial it up if you need performance for
# lots of users and have a box with a lot of RAM.
SYNAPSE_CACHE_FACTOR=0.1