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Notes from the nest · 980 posts

The Roost

Engineering notes written by the people building Crowkis. Comparisons, use cases, economics, internals, security, operations, and nothing written just to rank.

guidesMay 17, 2026· 4m

Cache DSPy in your AI search with Crowkis

Building AI search on DSPy? Add a semantic cache so popular queries hit again and again stop costing full price.

guidesMay 17, 2026· 4m

Cache LangGraph in your voice assistant with Crowkis

Building voice assistants on LangGraph? Add a semantic cache so latency-sensitive, repetitive spoken queries stop costing full price.

guidesMay 17, 2026· 5m

How to cache DSPy LLM calls with Crowkis

Add a semantic cache to DSPy so repeated and reworded questions are served for free, no rewrite, self-hosted.

featuresMay 17, 2026· 3m

Confidence scoring: every hit arrives with a number you can gate on

A cache that only says 'hit' or 'miss' makes you trust it blindly. Crowkis returns a confidence score per hit, a geometric mean of five signals, so you decide the bar reuse must clear.

operationsMay 17, 2026· 3m

A tour of the dashboard: six panels, zero mysteries

Live verdicts, hit-type economics, top misses, safety blocks, tenant accounting, system pressure, what each panel answers and who keeps it open.

economicsMay 17, 2026· 3m

Agent unit economics: making the per-task math survive contact with reality

Agents multiply model calls per user action by 10-50x. Without aggressive reuse, the unit economics of agentic products simply don't close.

guidesMay 16, 2026· 4m

Cache LangChain.js in your contract analysis tool with Crowkis

Building contract analysis tools on LangChain.js? Add a semantic cache so the same clause questions across documents stop costing full price.

guidesMay 16, 2026· 4m

Cache the OpenAI Python SDK in your customer support bot with Crowkis

Building customer support bots on the OpenAI Python SDK? Add a semantic cache so repeat questions from every customer, all day stop costing full price.

guidesMay 16, 2026· 4m

Cache DSPy in your ecommerce assistant with Crowkis

Building ecommerce assistants on DSPy? Add a semantic cache so the same product and policy questions across shoppers stop costing full price.

guidesMay 16, 2026· 4m

Cache LangGraph in your email drafting tool with Crowkis

Building email drafting tools on LangGraph? Add a semantic cache so similar drafts requested over and over stop costing full price.

guidesMay 16, 2026· 5m

Give DSPy agents long-term memory with Crowkis

Durable, per-user memory for DSPy agents that survives restarts and consolidates contradictions, self-hosted, zero egress.

securityMay 16, 2026· 3m

Compliance modes: HIPAA, SOC2, GDPR-EU, FedRAMP as configuration

Each regime wants specific retention, audit, and erasure behavior. Enterprise compliance modes preset the whole posture, so the auditor's checklist maps to a flag.

vs the fieldMay 16, 2026· 3m

Crowkis vs pgvector: your database deserves better than your cache traffic

pgvector is a lovely extension for storing embeddings next to your data. Routing every LLM query through Postgres is how lovely things die.

guidesMay 15, 2026· 4m

Cache LangChain.js in your onboarding assistant with Crowkis

Building onboarding assistants on LangChain.js? Add a semantic cache so every new hire asking the same first questions stop costing full price.

guidesMay 15, 2026· 4m

Cache the OpenAI Python SDK in your coding assistant with Crowkis

Building coding assistants on the OpenAI Python SDK? Add a semantic cache so the same explanations and boilerplate reasoning, dozens of times a day stop costing full price.

guidesMay 15, 2026· 4m

Cache DSPy in your healthcare Q&A assistant with Crowkis

Building healthcare Q&A assistants on DSPy? Add a semantic cache so recurring policy and triage questions stop costing full price.

guidesMay 15, 2026· 4m

Cache LangGraph in your code review bot with Crowkis

Building code review bots on LangGraph? Add a semantic cache so the same review patterns across pull requests stop costing full price.

guidesMay 15, 2026· 5m

How to cache Instructor LLM calls with Crowkis

Add a semantic cache to Instructor so repeated and reworded questions are served for free, no rewrite, self-hosted.

engineeringMay 15, 2026· 3m

Eviction with a ledger: why LRU is the wrong instinct for an LLM cache

LRU evicts by recency and nothing else. But cache entries have wildly different replacement costs, and forgetting a $0.40 answer to keep a $0.0004 one is just bad accounting.

use casesMay 15, 2026· 3m

Fintech assistants: fast answers, frozen correctness

Money questions repeat endlessly and tolerate zero staleness. Fintech is where freshness control stops being a feature and becomes the product.