feat(redis): added redis prefix support for cache backend

configs/development.ini

@@ -121,6 +121,10 b' vcs.svn.redis_conn = redis://redis:6379/'
 ; auto-renew lock to prevent stale locks, slower but safer. Use only if problems happen
 #rc_cache.repo_object.arguments.lock_auto_renewal = true
 
+; prefix for redis keys used for this cache backend, the final key is constructed using {custom-prefix}{key}
+#rc_cache.repo_object.arguments.key_prefix = custom-prefix-
+
+
 ; Statsd client config, this is used to send metrics to statsd
 ; We recommend setting statsd_exported and scrape them using Promethues
 #statsd.enabled = false

configs/production.ini

@@ -101,6 +101,10 b' vcs.svn.redis_conn = redis://redis:6379/'
 ; auto-renew lock to prevent stale locks, slower but safer. Use only if problems happen
 #rc_cache.repo_object.arguments.lock_auto_renewal = true
 
+; prefix for redis keys used for this cache backend, the final key is constructed using {custom-prefix}{key}
+#rc_cache.repo_object.arguments.key_prefix = custom-prefix-
+
+
 ; Statsd client config, this is used to send metrics to statsd
 ; We recommend setting statsd_exported and scrape them using Promethues
 #statsd.enabled = false

vcsserver/lib/rc_cache/backends.py

@@ -184,6 +184,9 b' class BaseRedisBackend(redis_backend.Red'
         self._lock_timeout = self.lock_timeout
         self._lock_auto_renewal = str2bool(arguments.pop("lock_auto_renewal", True))
 
+        self._store_key_prefix = arguments.pop('key_prefix', '')
+        self.key_prefix = f'{self._store_key_prefix}{self.key_prefix}'
+
         if self._lock_auto_renewal and not self._lock_timeout:
             # set default timeout for auto_renewal
             self._lock_timeout = 30
@@ -243,7 +246,7 b' class BaseRedisBackend(redis_backend.Red'
 
     def get_mutex(self, key):
         if self.distributed_lock:
-            lock_key = f'_lock_{safe_str(key)}'
+            lock_key = f'{self._store_key_prefix}_lock_{safe_str(key)}'
             return get_mutex_lock(
                 self.writer_client, lock_key,
                 self._lock_timeout,

vcsserver/lib/rc_cache/utils.py

@@ -69,11 +69,9 b' class RhodeCodeCacheRegion(CacheRegion):'
                 return result
 
             key = func_key_generator(*arg, **kw)
+            timeout = expiration_time() if expiration_time_is_callable else expiration_time
+            log.debug('Calling cached (timeout=%s) method:`%s`', timeout, user_func.__name__)
 
-            timeout = expiration_time() if expiration_time_is_callable \
-                else expiration_time
-
-            log.debug('Calling cached method:`%s`', user_func.__name__)
             return self.get_or_create(key, user_func, timeout, should_cache_fn, (arg, kw))
 
         def cache_decorator(user_func):