Timings: single SELECT now(); — 15 trials

• Secure WebSocket (wss://) to co-located proxy and DB, pipelined:
  ... ms   ... ms   ... ms   ... ms   ... ms   ... ms   ... ms   ... ms   ... ms   ... ms   ... ms   ... ms   ... ms   ... ms   ... ms  
• Secure WebSocket (wss://) to co-located proxy and DB, pipelined, coalesced writes:
  ... ms   ... ms   ... ms   ... ms   ... ms   ... ms   ... ms   ... ms   ... ms   ... ms   ... ms   ... ms   ... ms   ... ms   ... ms