optimization: redisindexsource scan_keys: use cached key list, if available

bump requirements to gevent 1.2.2

pywb/warcserver/index/indexsource.py

@@ -292,8 +292,12 @@ class RedisIndexSource(BaseIndexSource):
 
         key = res_template(member_key, params)
 
+        scan_key = 'scan:' + key
+        # check if already have keys to avoid extra smembers call
+        keys = params.get(scan_key)
+        if not keys:
             keys = self.redis.smembers(key)
-        params['scan:' + key] = keys
+            params[scan_key] = keys
 
         match_templ = match_templ.encode('utf-8')
 

requirements.txt

@@ -9,6 +9,6 @@ brotlipy
 pyyaml
 werkzeug
 webencodings
-gevent==1.2.1
+gevent==1.2.2
 webassets==0.12.1
 portalocker