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Top Articles of the Day | 20-Oct-2026

Read the best articles of today, from around the globe, curated at one place for you!

AI & Data

Pick #1
How to Detect Schema Drift Before Production Deployments
Dev.to 6 min read 9 reactions

Schema drift is easy to underestimate because the difference itself can look small until it affects a...

Pick #2
Tmux and Claude Code: Sessions, Send-Keys, and the Ceiling
Hacker News 5 min read 153 points

A working tmux setup for running Claude Code and other AI agents: session-per-project naming, pane layouts, send-keys for scripting an agent, capture-pane for reading one back, and the status-line monitor. Plus the limits you hit at four agents.

Pick #3
RAG vs Fine-Tuning: Which One Should You Use for Your AI App?
Dev.to 5 min read 5 reactions

RAG vs Fine-Tuning Explained: The Difference Every AI Developer Should Know Imagine you're building...

Product

Pick #1
Writing C for the Web in 2026 Isn't Insane. It Might Be the Future
Dev.to 8 min read 33 reactions

Someone shipped a modern, commercial web product — user accounts, Stripe payments, a search...

Pick #2
Show HN: KiviDB, a faster Redis-compatible memory database and vector cache
Hacker News 66 points

A fast, multi-threaded Redis® and Valkey alternative written in Rust: drop-in compatible, with full-text and vector search built in - kividbio/kividb

Pick #3
"Rails Magic" Isn't Magic. How a Request Actually Travels Through Rails.
Dev.to 10 min read 12 reactions

A visual, 10-minute deep dive into how Ruby on Rails actually runs under the hood. From Rack middlewares and Zeitwerk autoloading to ActiveRecord schema reflection and the view_assigns bridge.

Programming

Pick #1
Your agent's retry bug isn't an AI problem. It's a distributed-systems problem with an LLM on top.
Dev.to 3 min read 23 reactions

Most agent demos have a happy path: the model picks a tool, the tool returns 200, the agent moves on....

Pick #2
Show HN: Open-source early-reading reader with phonics help
Hacker News 21 points

A free reading app for kids who just learned their phonics sounds: every word in a story can be sounded out, tap a word for its sounds. Bring your own agent (MCP). Cloudflare Workers. - finereli/ya...

Pick #3
Inside OpenPLC Runtime v4: Establishing a Security Research Baseline
Dev.to 9 min read 7 reactions

By RUGERO Tesla (@404Saint). An architectural investigation into the processes, communication...

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