A hundred thousand commands
Over a typical network round trip, where pipelining is transformative
commands: 100000 rtt-ms: 0.5 pipeline-depth: 200
Redis Pipeline Calculator
Give the command count and the network round-trip time. The result shows the sequential and pipelined timings and where the difference comes from.
Paste below, or drop a file anywhere on this panel
Or drop a file anywhere on this panel. Nothing is uploaded: the analysis runs in this tab.
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Paste on the left and press Calculate. Nothing leaves this tab.
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Results
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Examples
Real input you can load into the tool above. Each one shows a different thing going wrong, because that is what the tool is for.
Too large a batch
A batch big enough to risk the client output buffer limit
commands: 1000000 rtt-ms: 0.5 pipeline-depth: 50000
Common mistakes
These are the ones that fail silently. The config is accepted, nothing raises an error, and the consequence arrives later.
Treating a pipeline as a transaction
Commands from other clients interleave freely between pipelined commands. Only MULTI/EXEC or a script is atomic.
Instead:Use MULTI or Lua where atomicity is required.
Batching without bound
The client holds every reply and the server buffers the output. A very large batch can trip client-output-buffer-limit and have the connection closed.
Instead:A few hundred to a few thousand captures almost all the benefit.
Pipelining over a unix socket and expecting a large gain
The saving is round trips, and a local socket round trip is already tiny.
Instead:Measure first. The benefit scales with network latency.
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