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caches: use repo.lru based Dict cache. This LRUDict uses Timing Algo to not have to use locking...
caches: use repo.lru based Dict cache. This LRUDict uses Timing Algo to not have to use locking for the LRU implementation, this it's safer to use for dogpile. We used it before with beaker, so it's generally more stable.

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__init__.py
75 lines | 2.5 KiB | text/x-python | PythonLexer
# -*- coding: utf-8 -*-
# Copyright (C) 2015-2018 RhodeCode GmbH
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License, version 3
# (only), as published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# This program is dual-licensed. If you wish to learn more about the
# RhodeCode Enterprise Edition, including its added features, Support services,
# and proprietary license terms, please see https://rhodecode.com/licenses/
import logging
from dogpile.cache import register_backend
register_backend(
"dogpile.cache.rc.memory_lru", "rhodecode.lib.rc_cache.backends",
"LRUMemoryBackend")
register_backend(
"dogpile.cache.rc.file_namespace", "rhodecode.lib.rc_cache.backends",
"FileNamespaceBackend")
register_backend(
"dogpile.cache.rc.redis", "rhodecode.lib.rc_cache.backends",
"RedisPickleBackend")
log = logging.getLogger(__name__)
from . import region_meta
from .utils import (
get_default_cache_settings, key_generator, get_or_create_region,
clear_cache_namespace, make_region, InvalidationContext,
FreshRegionCache, ActiveRegionCache)
def configure_dogpile_cache(settings):
cache_dir = settings.get('cache_dir')
if cache_dir:
region_meta.dogpile_config_defaults['cache_dir'] = cache_dir
rc_cache_data = get_default_cache_settings(settings, prefixes=['rc_cache.'])
# inspect available namespaces
avail_regions = set()
for key in rc_cache_data.keys():
namespace_name = key.split('.', 1)[0]
avail_regions.add(namespace_name)
log.debug('dogpile: found following cache regions: %s', avail_regions)
# register them into namespace
for region_name in avail_regions:
new_region = make_region(
name=region_name,
function_key_generator=key_generator
)
new_region.configure_from_config(settings, 'rc_cache.{}.'.format(region_name))
log.debug('dogpile: registering a new region %s[%s]',
region_name, new_region.__dict__)
region_meta.dogpile_cache_regions[region_name] = new_region
def includeme(config):
configure_dogpile_cache(config.registry.settings)