Cosmos: Microbenchmark and some optimizations#4159

Merged

analogrelay merged 23 commits into

Azure:release/azure_data_cosmos-previewsfrom

analogrelay:ashleyst/micro-benchmarks

Apr 20, 2026

Commits on Apr 17, 2026

Add criterion microbenchmarks for CosmosDriver with profiling

analogrelay
and
Copilot
committed
bench: update with parameterizable simulated latency
analogrelay
committed
bench: reorganize a bit
analogrelay
committed
bench: live benchmark
analogrelay
committed
bench: perfbench script
analogrelay
committed
fix: parse account properties into endpoint URLs once
analogrelay
committed
fix: more optimal header reading
analogrelay
committed
fix: more optimal handling of resource paths
analogrelay
committed
fix: slim down the account endpoint state using arcs
analogrelay
committed
fix: skip sync_account_properties when account properties unchanged

analogrelay
and
Copilot
committed
fix: pre-allocate Headers map to avoid rehashing in hot path

analogrelay
and
Copilot
committed
fix: pre-size auth strings to reduce allocations in hot path

analogrelay
and
Copilot
committed
fix: eliminate name_path allocation by reusing ContainerReference::name_based_path

analogrelay
and
Copilot
committed
fix: cache EndpointKey in CosmosEndpoint to avoid per-request format

analogrelay
and
Copilot
committed
fixup: restore request/response header name split after cherry-pick conflicts

analogrelay
and
Copilot
committed
fix: address PR review comments

analogrelay
and
Copilot
committed
chore: clippy and refmt
analogrelay
committed
fix: docs issue
analogrelay
committed
bench: remove dhat
analogrelay
committed
chore: spell check
analogrelay
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chore: update feature flags
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committed
spelling errors
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Cosmos: Microbenchmark and some optimizations#4159

Cosmos: Microbenchmark and some optimizations#4159
analogrelay merged 23 commits into
Azure:release/azure_data_cosmos-previewsfrom
analogrelay:ashleyst/micro-benchmarks

Commits on Apr 17, 2026

Add criterion microbenchmarks for CosmosDriver with profiling

bench: update with parameterizable simulated latency

bench: reorganize a bit

bench: live benchmark

bench: perfbench script

fix: parse account properties into endpoint URLs once

fix: more optimal header reading

fix: more optimal handling of resource paths

fix: slim down the account endpoint state using arcs

fix: skip sync_account_properties when account properties unchanged

fix: pre-allocate Headers map to avoid rehashing in hot path

fix: pre-size auth strings to reduce allocations in hot path

fix: eliminate name_path allocation by reusing ContainerReference::name_based_path

fix: cache EndpointKey in CosmosEndpoint to avoid per-request format

fixup: restore request/response header name split after cherry-pick conflicts

fix: address PR review comments

chore: clippy and refmt

fix: docs issue

bench: remove dhat

chore: spell check

chore: update feature flags

spelling errors

more spell checking