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streaming-huge-json: 1 GiB streaming vs tree vs binding benchmark (Jackson 3.2.4, JDK 25) for the rewritten streaming post

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Co-Authored-By: Claude Sonnet 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01CifR2BE7PBvRy5hT8TS9oz
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Claude
2026-10-26 02:03:57 +00:00
parent b1663c235d
commit 1d0cd8b36e
17 changed files with 560 additions and 0 deletions
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streaming-huge-json/scripts/run-all.sh
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#!/usr/bin/env bash
# Builds the module, runs the small demos (captured to output/), generates the 1 GiB file
# (NOT committed: target/ is git-ignored) and runs the memory ladder. Needs a JDK 25 on PATH.
# ./scripts/run-all.sh full run, ~5-10 minutes
# ./scripts/run-all.sh --quick small demos only, no 1 GiB file
set -eu
cd "$(dirname "$0")/.."
mvn -B -q compile
mvn -B -q dependency:build-classpath -Dmdep.outputFile=target/cp.txt
CP="target/classes:$(cat target/cp.txt)"
for c in NestedTrap TruncatedFile ReadLimits; do
# grep -v strips the sandbox's injected "Picked up JAVA_TOOL_OPTIONS" notice (not program output)
java -cp "$CP" com.ankurm.jackson3.streaminghuge.$c 2>&1 | grep -v '^Picked up' > output/$c.txt
echo "wrote output/$c.txt"
done
[ "${1:-}" = "--quick" ] && exit 0
[ -f target/huge.json ] || java -Xmx64m -cp "$CP" com.ankurm.jackson3.streaminghuge.GenerateHugeJson 2>&1 \
| grep -v '^Picked up' | tee output/GenerateHugeJson.txt
# the naive hybrid: shows the trailing-token failure on a small file
java -Xmx64m -cp "$CP" com.ankurm.jackson3.streaminghuge.GenerateHugeJson target/small.json 5000000 2>&1 | grep -v '^Picked up' > /dev/null
java -Xmx512m -cp "$CP" com.ankurm.jackson3.streaminghuge.Scan hybrid-naive target/small.json 2>&1 \
| grep -v '^Picked up' | head -4 > output/HybridNaive.txt || true
rm -f target/small.json
scripts/bench.sh target/huge.json