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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 3, 2026· 4m

Cache LangGraph in your API documentation bot with Crowkis

Building API documentation bots on LangGraph? Add a semantic cache so the same endpoint questions from every developer stop costing full price.

guidesMay 3, 2026· 5m

How to cache the OpenAI Node SDK LLM calls with Crowkis

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

engineeringMay 3, 2026· 3m

Designing the MCP server: a cache as a tool the model can hold

MCP turns Crowkis into something an AI assistant can use deliberately, check the cache, store the answer, over plain stdio, with the banner silenced so JSON-RPC stays clean.

use casesMay 3, 2026· 3m

Platform teams: make caching a paved road, not a per-team adventure

Every product team is duct-taping its own LLM cache right now. Platform engineering exists to end exactly this kind of duplication.

guidesMay 2, 2026· 4m

Cache Spring AI in your legal document assistant with Crowkis

Building legal document assistants on Spring AI? Add a semantic cache so the same clauses and questions across matters stop costing full price.

guidesMay 2, 2026· 4m

Cache the OpenAI Python SDK in your data analysis agent with Crowkis

Building data analysis agents on the OpenAI Python SDK? Add a semantic cache so repeated tool calls and the same analytical questions stop costing full price.

guidesMay 2, 2026· 4m

Cache DSPy in your contract analysis tool with Crowkis

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

guidesMay 2, 2026· 4m

Cache LlamaIndex in your customer support bot with Crowkis

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

guidesMay 2, 2026· 5m

Give the OpenAI Node SDK agents long-term memory with Crowkis

Durable, per-user memory for the OpenAI Node SDK agents that survives restarts and consolidates contradictions, self-hosted, zero egress.

featuresMay 2, 2026· 3m

CKEYLIMIT: per-tenant rate limits that stop the runaway before it starts

A runaway agent or a noisy tenant can torch a budget in minutes. CKEYLIMIT sets per-tenant requests-per-minute and tokens-per-minute ceilings, enforced locally before the spend happens.

economicsMay 2, 2026· 3m

The ROI timeline: hour one, week one, quarter one

Caching ROI isn't a hockey stick, it's a staircase that starts the first hour. Here's the honest schedule of when each saving shows up.

guidesMay 1, 2026· 4m

Cache Spring AI in your education tutor with Crowkis

Building education tutors on Spring AI? Add a semantic cache so students asking the same concepts thousands of times stop costing full price.

guidesMay 1, 2026· 4m

Cache the OpenAI Python SDK in your HR assistant with Crowkis

Building HR assistants on the OpenAI Python SDK? Add a semantic cache so the same policy questions from every employee stop costing full price.

guidesMay 1, 2026· 4m

Cache DSPy in your onboarding assistant with Crowkis

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

guidesMay 1, 2026· 4m

Cache LlamaIndex in your coding assistant with Crowkis

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

guidesMay 1, 2026· 5m

How to cache the Anthropic SDK LLM calls with Crowkis

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

vs the fieldMay 1, 2026· 3m

Crowkis vs OpenAI prompt caching: a discount is not a cache

Provider prompt caching discounts your repeated prefixes. You still call the model, still wait, and still pay, just slightly less. There's a bigger idea available.

guidesApr 30, 2026· 4m

Cache Spring AI in your multi-agent system with Crowkis

Building multi-agent systems on Spring AI? Add a semantic cache so a swarm of agents asking overlapping questions stop costing full price.

guidesApr 30, 2026· 4m

Cache the OpenAI Python SDK in your IT helpdesk bot with Crowkis

Building IT helpdesk bots on the OpenAI Python SDK? Add a semantic cache so the same tickets and fixes, endlessly stop costing full price.

guidesApr 30, 2026· 4m

Cache DSPy in your meeting-notes summarizer with Crowkis

Building meeting-notes summarizers on DSPy? Add a semantic cache so similar summaries requested repeatedly stop costing full price.