How to Fix Slow Vector Search Queries in pgvector: Optimizing HNSW Index Performance
Why pgvector queries get slow, measured on 100,000 vectors: skipped indexes, ef_search, filtered queries returning too few rows, and slow HNSW builds.
Which JSON Schema Keywords Gemini Structured Output Accepts, Tested
Tested on the Gemini API: which JSON Schema keywords return HTTP 400, which are accepted but ignored, and what to validate in your own code.
Fix Gemini API Timeouts: SDK Units, Model IDs and Proxy Limits
Gemini API timeout fixes checked against the SDK source and live calls: the timeout is in milliseconds, plus model IDs, proxy limits and latency.
How to Fix Vector Dimension Mismatch Errors in pgvector and Pinecone
Fix vector dimension mismatch errors in pgvector and Pinecone after changing embedding models, and keep index and column sizes aligned.
How to Fix CORS Errors When Connecting Next.js 15 to a FastAPI AI Backend
Fix CORS errors between a Next.js 15 frontend and a FastAPI AI backend with backend middleware or Next.js rewrites.
Pydantic V2 Validation Errors in LLM JSON Output: What Each Means, Tested
Pydantic V2 validation errors on LLM JSON, reproduced one by one: missing, extra_forbidden, int_type, json_invalid and what causes each.
How to Fix Ollama 'Connection Refused' Errors in Cursor and VS Code
Fix Ollama 'Connection Refused' errors in Cursor and VS Code: check the server is running, resolve port 11434 conflicts, and set OLLAMA_HOST.
How to Fix Docker 'No Space Left on Device' Errors When Downloading Ollama Models
Free disk space when Docker reports 'No space left on device' while pulling Ollama models: prune the build cache and resize the VM disk.
How to Fix 'Hydration Failed' Errors in Next.js 15 and React 19
Find what causes 'Hydration Failed' errors in Next.js 15 and React 19 and fix the mismatch between server and client rendering.
How to Fix 'TypeError: Failed to Fetch' in Next.js Server Actions
Debug 'TypeError: Failed to fetch' in Next.js Server Actions: origins, middleware, timeouts and deployment skew, with a Next.js 16.4 test.
How to Fix Prompt Caching Failures in Gemini 3.1 Pro and Gemini 3.6 Flash API Pipelines
Why Gemini prompt caching misses: what the API returned in a live test (1,024-token explicit minimum, free-tier 429 with limit 0), and how to check hits.
How to Fix Git Merge Conflicts Generated by AI Coding Assistants in Cursor and VS Code
Recover from Git merge conflicts left by AI coding assistants in Cursor and VS Code: abort, discard, use the merge editor, or repair by hand.
Fix Python Asyncio Timeout Errors in Claude Fable 5.1 Pipelines
Measured default timeouts in httpx, aiohttp and the Anthropic SDK, the exception to catch, why streaming avoids read timeouts, and asyncio.to_thread.