This is the engineering blog newsletter from Nextree, a Korean software company. Recent issues walk through concrete engineering problems and how the team solved them, including React input lag, reliable answer saving for online exams, and S3-based data tiering to cut database costs.
Website: https://www.nextree.io/
Kent Beck writes about software design, testing and programming technique, framed as ways to improve human relationships among developers. Issues mix practical refactoring and testing advice with reflections on working with AI coding tools.
A software developer's blog going deep on CRDT internals, including fractional indexes for text editing and spreadsheets, and a disk-native Yjs implementation. Readers get implementation-level design discussion with trade-offs, data structure details and working JavaScript demos.
VarOps publishes data-backed pieces on applied AI, including hands-on benchmarks of new models, critiques of how coding agents are evaluated, and tooling for agent-driven development. Each issue includes disclosures, concrete numbers, and tests readers can run on their own data or history.
A weekly newsletter that explains core software engineering topics such as floating-point representation, caching, and API design in structured, multi-part explanations. Readers get ground-up technical explanations with worked examples and clear outlines.
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