pi-prefix-cache-compaction
Pi compaction that reuses the server's prefix cache (vLLM / SGLang / llama.cpp Anthropic endpoints): no cold re-prefill, plus a warm-up so the next turn starts from cache
Details
- External ID
- 1375407625
- Source
- GITHUB
- Company
- —
- Product
- pi-prefix-cache-compaction
- Website domain
- github.com
- Launched
- Sept. 18, 2026
- Cohort
- —
- Upvotes
- 15
- Upvotes percentile
- 0.4914168588265437
- Tags
- —
- Fetched at
- Sept. 22, 2026, 5:02 p.m.
- Updated at
- Sept. 22, 2026, 5:02 p.m.
Enrichment
- Theme
- self-hosted infrastructure and security tools
- Vertical
- Horizontal
- Function
- Model & infra
- Audience
- Developer
- AI stance
- AI-native
- Project type
- Hobby / open-source project
- Normalized one-liner
- prefix cache compaction for llm inference servers
- Manually corrected
- False
Could you build this?
Partial The script extension itself is concise, but understanding and aligning KV cache prefix boundaries across vLLM, SGLang, and llama.cpp chunked prefill implementations requires deep inference engine knowledge.
What it would actually take: This utility requires exact alignment of conversation history and system messages to the page/block size boundaries (e.g., 16 or 32 tokens in vLLM PagedAttention) and issuing warm-up requests without generating tokens. Implementing this requires specialized familiarity with LLM serving engine internals, RadixAttention trees, KV cache eviction policies, and exact Anthropic API simulation behavior.
Competitors
Other products that read as similar to this one — 22 launches clear the similarity bar, closest 8 shown.
Attention rank: #8 of 23 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 247 days after the earliest competitor.
- genpark-dynamic-prompt-prefix-cache-skill · github · 2026-09-28 · 7 upvotes · similarity 0.40
- pi-fast-jev-compaction · github · 2026-09-18 · 9 upvotes · similarity 0.37
- I'm running parallel Pi agents on a local sandbox · hn · 2026-05-03 · 8 upvotes · similarity 0.33
- KV-psi, using Linux PSI to to trim an LLM KV cache · hn · 2026-06-27 · 8 upvotes · similarity 0.33
- fast-jev-compaction-opencode · github · 2026-09-26 · 11 upvotes · similarity 0.33
- Cachet · hn · 2026-06-23 · 5 upvotes · similarity 0.33
- zuey-pi-setup · github · 2026-09-15 · 25 upvotes · similarity 0.32
- Eclipse Linux Alpha · hn · 2026-04-08 · 5 upvotes · similarity 0.32
Other launches for this product
- No other launches for this product.
Same idea, different domain
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