15 August 2026

49 new posts across 10 practice and leadership sources — 6 worth your time.

One week of Craft & Leadership, 6 stories, as published.

Canva Shares S3 Based Architecture for Session Revocation across Hundreds of Millions of Sessions

Canva redesigned its session revocation infrastructure to support 100 million active sessions while reducing database lookups. The new architecture utilizes Amazon S3 for durable revocation records and distributes compact, in-memory indexes to application gateways.

Why it matters — Distributing compact, in-memory indexes to gateways from S3 cut Canva's revocation cache memory footprint by 87.5% and reduced database infrastructure requirements.

InfoQ Architecture · 15 August 2026 · Read the original →

Architecture

How Netflix Scaled its Real-Time Service Map

Netflix redesigned the streaming pipeline behind its real-time Service Topology map to handle production scale. The new system separates intermediary resolution, enrichment, and persistence into three distinct stages, propagates backpressure to Kafka, and uses server-sent events instead of gRPC for internal transfers.

Why it matters — Propagating backpressure to Kafka instead of dropping records, combined with using server-sent events for high-volume internal transfers, allows the pipeline to scale reliably without data loss.

InfoQ Architecture · 15 August 2026 · Read the original →

Careers

Middle management roles are also a trap.

Building on his previous thesis about Tech Lead Management (TLM) roles, Will Larson argues that middle management roles present their own unique traps. The post explores the structural tensions and challenges inherent in navigating these positions.

Why it matters — Understanding the structural traps of middle management helps engineering leaders evaluate career progression paths beyond the initial transition from individual contributor to manager.

Will Larson · 15 August 2026 · Read the original →

Testing & Quality

TDD inside the agent loop - theater or actual value?

This post explores whether instructing LLM agents to use Test-Driven Development (TDD) actually improves their software development output. It highlights experiments conducted to determine if TDD makes a practical difference in agentic workflows.

Why it matters — Testing whether TDD practices improve LLM agent performance helps teams design more effective agentic workflows based on empirical results rather than industry assumptions.

Martin Fowler · 15 August 2026 · Read the original →

Careers

The Case for Hiring Junior Engineers 🌱

This post challenges the dominant narrative that AI tools make junior engineers redundant by approximating their output. It argues against the idea that organizations should only hire senior engineers to steer these tools.

Why it matters — Countering the narrative that AI replaces junior engineers helps engineering managers maintain a sustainable talent pipeline and prevent long-term organizational skill gaps.

Refactoring · 15 August 2026 · Read the original →

Practice

Roadmap decisions rather than dates.

Details the challenge of prioritizing passkey support at Imprint, balancing security improvements and reduced login friction against other roadmap demands. It advocates for making roadmap decisions based on systemic value rather than strict date commitments.

Why it matters — Prioritize technical roadmap items by framing them around simultaneous risk reduction and user friction reduction.

Will Larson · 15 August 2026 · Read the original →

It is always easier to scale a service map than to agree on a roadmap.

6 stories, every Saturday

Published here every week. Follow by RSS to get it as it lands.

Subscribe by RSS All issues

← Previous issue Next issue →