https://thestacksignal.github.io/ StackSignal publishes deeply practical engineering and AI guides: performance, architecture, LLMs and applied machine learning. en-us Sun, 13 Sep 2026 00:00:00 GMT https://thestacksignal.github.io/blog/browser-rendering-explained.html https://thestacksignal.github.io/blog/browser-rendering-explained.html Tech Sun, 13 Sep 2026 00:00:00 GMT Understand the browser rendering pipeline, critical rendering path, layout, paint and compositing — and where performance really gets lost. https://thestacksignal.github.io/blog/image-optimization-for-web.html https://thestacksignal.github.io/blog/image-optimization-for-web.html Tech Sun, 13 Sep 2026 00:00:00 GMT A practical image optimization guide covering dimensions, modern formats, responsive images, loading priority and the mistakes that hurt LCP. https://thestacksignal.github.io/blog/caching-and-cdn-strategies.html https://thestacksignal.github.io/blog/caching-and-cdn-strategies.html Tech Sun, 13 Sep 2026 00:00:00 GMT Learn how browser caching, immutable assets, cache-control headers and CDNs work together to make static websites faster and cheaper. https://thestacksignal.github.io/blog/embeddings-explained.html https://thestacksignal.github.io/blog/embeddings-explained.html AI Sun, 13 Sep 2026 00:00:00 GMT A practical explanation of embeddings, similarity, vector dimensions, chunking and how embeddings power search, RAG and recommendations. https://thestacksignal.github.io/blog/vector-databases-explained.html https://thestacksignal.github.io/blog/vector-databases-explained.html AI Sun, 13 Sep 2026 00:00:00 GMT Understand vector databases, approximate nearest-neighbour indexes, metadata filtering and the design decisions behind production retrieval systems. https://thestacksignal.github.io/blog/ai-agents-vs-rag.html https://thestacksignal.github.io/blog/ai-agents-vs-rag.html AI Sun, 13 Sep 2026 00:00:00 GMT A practical comparison of AI agents and RAG: retrieval, tools, planning, memory, failure modes, costs and when to combine both. https://thestacksignal.github.io/blog/llm-inference-optimization.html https://thestacksignal.github.io/blog/llm-inference-optimization.html AI Sun, 13 Sep 2026 00:00:00 GMT Learn the core levers for faster LLM inference: quantization, batching, KV cache, context length, speculative decoding and model choice. https://thestacksignal.github.io/blog/prompt-engineering-for-production.html https://thestacksignal.github.io/blog/prompt-engineering-for-production.html AI Sun, 13 Sep 2026 00:00:00 GMT Move beyond clever prompts with production patterns for instructions, structured outputs, examples, failure handling, evaluation and prompt versioning. https://thestacksignal.github.io/blog/technical-seo-for-ai-websites.html https://thestacksignal.github.io/blog/technical-seo-for-ai-websites.html AI Sun, 13 Sep 2026 00:00:00 GMT A developer-focused technical SEO checklist for AI and tech sites covering crawlability, canonical URLs, robots.txt, sitemaps, internal links and indexing diagnostics. https://thestacksignal.github.io/blog/internal-linking-for-topical-authority.html https://thestacksignal.github.io/blog/internal-linking-for-topical-authority.html AI Sun, 13 Sep 2026 00:00:00 GMT A practical internal-linking framework for building topical authority: pillar pages, supporting articles, anchor text, click depth and link maintenance. https://thestacksignal.github.io/blog/chatgpt-prompts-productivity.html https://thestacksignal.github.io/blog/chatgpt-prompts-productivity.html AI Fri, 11 Sep 2026 00:00:00 GMT 30 ChatGPT prompts I actually use for email, meetings, spreadsheets and writing - copy, paste, replace the brackets. Plus the three prompts I stopped using. https://thestacksignal.github.io/blog/rag-vs-fine-tuning.html https://thestacksignal.github.io/blog/rag-vs-fine-tuning.html AI Wed, 09 Sep 2026 00:00:00 GMT RAG vs fine-tuning explained with a clear decision framework: cost, freshness, accuracy, latency and when to combine both approaches. https://thestacksignal.github.io/blog/core-web-vitals-checklist-2026.html https://thestacksignal.github.io/blog/core-web-vitals-checklist-2026.html Tech Tue, 08 Sep 2026 00:00:00 GMT A field-tested Core Web Vitals checklist for 2026: how to pass INP, LCP and CLS on real devices, with the exact fixes that move the numbers. https://thestacksignal.github.io/blog/ai-seo-topical-authority.html https://thestacksignal.github.io/blog/ai-seo-topical-authority.html AI Sun, 06 Sep 2026 00:00:00 GMT How to build topical authority with AI-assisted workflows: entity coverage, internal linking clusters, structured data and content that survives AI search. https://thestacksignal.github.io/blog/cut-javascript-bundle-size.html https://thestacksignal.github.io/blog/cut-javascript-bundle-size.html Tech Sat, 05 Sep 2026 00:00:00 GMT A repeatable process to cut JavaScript bundle size by 60%: measure, split, replace heavy dependencies and delete dead code — without losing features. https://thestacksignal.github.io/blog/local-llm-8gb-vram-setup.html https://thestacksignal.github.io/blog/local-llm-8gb-vram-setup.html AI Thu, 03 Sep 2026 00:00:00 GMT A practical guide to running a local LLM on 8GB VRAM: model choices, quantisation levels, context limits, throughput expectations and tuning tips. https://thestacksignal.github.io/blog/self-hosting-vs-serverless.html https://thestacksignal.github.io/blog/self-hosting-vs-serverless.html Tech Wed, 02 Sep 2026 00:00:00 GMT Serverless or a $12 VPS? A concrete cost and operations comparison across traffic tiers, cold starts, egress fees and engineering time.