add caching for CI workflow as well #15

	name: Rust TPC-H Benchmarks

	# Do not run this workflow on pull request since this workflow has permission to modify contents.
	on:
	push:
	branches:
	- main
	- continuous-bench-attempt

	permissions:
	# deployments permission to deploy GitHub pages website
	deployments: write
	# contents permission to update benchmark contents in gh-pages branch
	contents: write

	jobs:
	benchmark:
	name: Run Rust benchmark example
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4

	# Setup Rust.
	- run: rustup toolchain install stable --profile minimal --no-self-update

	# Make sure to use cached compilation objects if they exist.
	- uses: Swatinem/rust-cache@v2

	# Run the benchmark and store the result in `output.txt`.
	- name: Run benchmark
	run: cargo bench --bench planner_bench tpch/ -- --output-format bencher \| tee output.txt

	# Run the `github-action-benchmark` action.
	- name: Store benchmark result
	uses: benchmark-action/github-action-benchmark@v1
	with:
	name: Rust Benchmark
	tool: "cargo"
	output-file-path: output.txt
	gh-pages-branch: gh-pages
	github-token: ${{ secrets.GITHUB_TOKEN }}
	# Automatically push the results to the GitHub pages branch.
	auto-push: true
	# Show alert with commit comment on detecting possible performance regression.
	alert-threshold: "125%"
	summary-always: true
	comment-on-alert: true
	fail-on-alert: true
	alert-comment-cc-users: "@connortsui20"
	# Push to dedicated benchmark result repository.
	gh-repository: "github.com/cmu-db/optd-benchmark"

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