benchmarks-report.md

@@ -70,5 +70,12 @@ The following is a graph showing the time improvement between legacy (as baselin
 
 ![legacy-vs-blobs](/uploads/89dbd75715d466478cad7b8e6745de9a/legacy-vs-blobs.png)
 
+The implementations compared in the figure above are:
+
+* **Legacy:** uses the JSON-based synchronization to transfer all messages.
+* **Blobs:** uses the new BLOBs implemenation to transfer content of messages. Legacy sync is still used to transfer metadata.
+* **Blobs + session cache:** same as above, but also caches session in server-side, thus avoiding having to query couch for user authentication data on every request.
+* **Blobs + session cache + persistent http:** same as above, but also reuses HTTP connections on client side, thus avoiding having to open a new TLS/TCP connection for every request.
+
 ## Server-side backend storage optimization.
 ## Server scalability.
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