Mini book: Evolutionary Architecture in Practice
Discover how to keep software evolvable as systems, technology, and teams shift. This edition explores agentic fitness functions for semantic drift,…
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Presentation: How to Find Resilience Bugs in Systems that Don't Exist
Hillel Wayne discusses how formal methods principles - such as property strength, state-space verification, and environment assumptions - help softw…
Presentation: How Eve Online Leverages Head Based Sampling to Observe "Fun"
Nicholas Herring shares how EVE Online tackles distributed tracing and observability across a 20-year-old MMO architecture. He discusses leveraging…
Grab Redesigns Counter Service Storage for 50% Lower P99 Latency
Grab migrated its high-volume Counter Service from a wide column database to Aerospike using storage abstraction, shadow traffic, data parity valida…
Cursor Uses S3 WAL to Scale Git Storage to More than 300 Pushes per Second
Cursor has introduced Continuity, a Git storage architecture that uses an S3 backed write ahead log as the source of truth. The design turns local N…
Meta’s ZGateway Cuts ZippyDB Connections 19x While Handling 1B+ Operations per Second
Meta has introduced ZGateway, a stateless proxy for ZippyDB that centralizes connection management, traffic routing, caching, load balancing, and ad…
Stateless MCP Removes Session Affinity Requirements for AWS Server Deployments
AWS details how the latest Model Context Protocol specification removes protocol-level sessions, sticky-session requirements, and session storage fo…
Uber Redesigns M3DB Sharding with Subclusters to Limit Failure Impact
Uber has redesigned shard placement in M3DB with fixed size subclusters to limit the impact of node failures, maintenance, and cluster scaling. The…
Presentation: The Agent Harness: Control Planes, Invariants, and Approval Boundaries for Production AI Agents
OpenAI’s Vinoth Govindarajan discusses why production AI agents fail beyond model hallucination. Using real-world case studies like OpenClaw, he exp…
Dropbox Evolves Riviera Content Processing Platform to Support AI Workloads
Dropbox has evolved Riviera from a file preview service into a universal content processing platform supporting more than 300 file formats and over…
Agoda Replaces 72-Shard SQL Server Price Cache with DragonflyDB
Agoda migrated its 1.5 TB hotel Price Cache from 72 SQL Server shards to DragonflyDB to handle growing read and write volumes. The migration used st…
Airbnb Cuts Authentication Code by 60% with Server Driven Architecture
Airbnb redesigned its authentication architecture around server driven flows and policy based challenge selection. The new Flexible Authentication s…
Uber Builds GitFarm to Run Git Operations as a Service for Large-Scale Monorepos
Uber’s GitFarm provides Git operations as a centralized service, eliminating local repository clones across large scale monorepo workloads. The plat…
Presentation: From DVDs to Global Streaming: How Netflix’s Commerce Architecture Actually Evolved
Kasia Trapszo discusses how Netflix evolved its commerce platform from a U.S. DVD service into global infrastructure. She explains navigating intern…
Harper Argues Against the Multi-System Stack and Releases 5.2
The database platform Harper advocates for a single-runtime architecture that keeps application code and data together, with its benchmark against a…
Presentation: Understanding Progressive Collapse: How To Avoid A Cascading Failure
Sam Newman discusses the concept of progressive collapse in civil engineering and how it applies to distributed systems. Using real-world examples -…
Cloudflare Migrates JavaScript CDN Serving 9B Requests a Day to Its Developer Platform
Cloudflare has migrated cdnjs, its open source CDN for JavaScript and CSS libraries, to its Developer Platform. The new architecture uses Workers, R…
Spotify Builds External Index to Enable Low Latency Point Queries on Its Data Lake
Spotify introduced external indexing architecture for Apache Parquet data lakes that enables low-latency point queries without replicating datasets…
Instacart Builds Blueberry, an AI-Powered Assistant to Help On-Call Engineers Investigate Incidents
Instacart introduced Blueberry, an AI-assisted incident response system that helps on-call engineers investigate production issues faster. It combin…
JioHotstar Explains the Distributed Engineering Behind Personalized Ad Requests at Streaming Scale
JioHotstar explains the distributed architecture behind its real-time ad request workflow, covering ad decisioning, waterfall tiering, pacing algori…
Cloudflare Introduces Meerkat for Strongly Consistent Global Coordination
Cloudflare recently introduced Meerkat, an internal globally consistent control-plane service based on the QuePaxa consensus algorithm. Unlike Raft,…
Presentation: Parting the Clouds: The Rise of Disaggregated Systems
Murat Demirbas discusses the shift toward disaggregated cloud database architectures driven by cloud economics. He explains how decoupling compute f…
DoorDash Uses Envoy and Valkey for a 1.5M RPS Proxy Cache with 99.99999% Availability
DoorDash has developed Entity Cache, a transparent proxy caching platform built on Envoy and Valkey to reduce redundant service-to-service requests…
Google and Industry Partners Announce Agentic Resource Discovery Specification for AI Agents
Google and industry partners announced Agentic Resource Discovery (ARD) Specification, an open standard for publishing, discovering, and verifying A…
How DoorDash Built an AI Shopping Assistant That Doesn’t Rely on the LLM Alone
DoorDash details the architecture behind Ask DoorDash, its AI-powered conversational shopping assistant, combining LLMs, specialized AI agents, MCP-…
Airbnb Shares Architecture Behind Sitar-Agent Dynamic Configuration Sidecar for Kubernetes Services
Airbnb engineers detailed Sitar-agent, a Kubernetes sidecar for dynamic configuration delivery across tens of thousands of pods, processing updates…
Netflix Cuts Cassandra Read Latency from Seconds to Milliseconds with Dynamic Partition Splitting
Netflix engineers introduced dynamic partition splitting for Cassandra to address wide partitions in time series workloads. The metadata-driven appr…
Instacart Scales Personalized Marketing via Configuration-Driven Multi-Tenant Platform
Instacart redesigned its personalized marketing system using a configuration-driven multi-tenant architecture on Storefront Pro. The system replaces…
Slack Outlines Four-Phase Journey to a Multi-Cloud AI Serving Platform
Slack has outlined how its AI serving infrastructure evolved through four distinct phases, moving from a self-managed Amazon SageMaker deployment to…
Inside Atlassian’s Forge Billing Architecture for Distributed Usage Tracking at Scale
Atlassian details the Forge billing platform built for usage-based pricing across its cloud ecosystem. It processes large-scale usage events with co…