Fix: in peak times, ip-to-version-cache cycles before the 1 minute ma…

…rk (#387)

The whole point of this cache is that it survives at least 1 minute,
as that is how long the client can take to get back tous.

bananas_server/application/bananas_server.py

@@ -45,7 +45,7 @@ def set_version_from_source(source, version):
     IP_TO_VERSION_CACHE[source.ip] = version
 
     # Ensure this cache doesn't grow out of control.
-    if len(IP_TO_VERSION_CACHE) > 1000:
+    if len(IP_TO_VERSION_CACHE) > 10000:
         IP_TO_VERSION_CACHE.pop(next(iter(IP_TO_VERSION_CACHE)))