SpacetimeDB

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Noa 5291f57d7f Stop conflating EnergyQuanta and FunctionBudget (#4930 )

# Description of Changes

A sort of followup to/unrevert of #4884, an alternative to #4927.

In #3832, we made FunctionBudget a different unit than EnergyQuanta, but
there were still many places where we treated them the same and directly
converted between them. I got confused by that in #4884, and now this PR
properly separates them and corrects the v8 energy calculation.

Also, since we now benchmark the same module in rust and typescript in
the form of the keynote benchmark, this patch adds a new assertion to
that test that the fuel usage of both modules is within 2X of each
other.

# Expected complexity level and risk

3 - touches energy calculation without reverting the problematic #4884,
but I'm confident it's correct this time.

# Testing

- [x] Verified that the conversion factors make sense for wasmtime and
for v8.
- [x] Assert that typescript and rust keynote bench runs have similar
cpu usage

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Co-authored-by: joshua-spacetime <josh@clockworklabs.io>

2026-06-02 23:05:47 +00:00

examples

Typescript v2 API (#4271 )

2026-02-13 00:34:00 +00:00

src

Stop conflating EnergyQuanta and FunctionBudget (#4930 )

2026-06-02 23:05:47 +00:00

Cargo.toml

execute_plan: don't build temporary vec of rows (#2918 )

2025-07-30 22:19:57 +00:00

DEVELOP.md

v3 websocket transport protocol (#4761 )