Posted inAI System Design
Day 100: Capstone Ship: Demo, Postmortem, Next 90 Days
This senior-level guide covers Capstone Ship with production trade-offs for reliability, security, and cost.
Cursor Cloud Agents (formerly Background Agents): CI Gates That Catch Hallucinated AWS Changes
CI gates for Cursor Cloud Agent pull requests on AWS CDK: blast-radius limits, tsc and cdk synth, cfn-lint, a template gate for wildcard IAM and AdministratorAccess, CODEOWNERS and Cursor project rules.
Posted inAI AWS Machine Learning
Bedrock Agents + EventBridge: Async Tools Without Blocking the Session
Bedrock Agents + EventBridge: offload long tools with start/status APIs, correlation IDs, and fail-closed IAM so sessions stay interactive while workers run the slow path.
Posted inAWS System Design
EventBridge Pipes to Lambda: Enrich, Filter, and Fail Closed
EventBridge Pipes to Lambda done safely: fail-closed filters, idempotent enrichment, partial-batch failures, and DLQs — so agent and order pipelines do not silently drop events.
SSRF Hardening in Node: Block Metadata and DNS Rebinding on Fetches
This senior-level guide covers SSRF Hardening in Node with production trade-offs for reliability, security, and cost.
Posted inDebugging System Design
Distributed Deadlock Detection: Cycles Across Postgres Rows and Redis Locks
This senior-level guide covers Distributed Deadlock Detection with production trade-offs for reliability, security, and cost.
CloudWatch Logs Anomaly Detection: Ignore Deploy Noise, Catch Novel Errors
This senior-level guide covers CloudWatch Logs Anomaly Detection with production trade-offs for reliability, security, and cost.
Node Core Dump Analysis: Symbolicate Native Crashes Inside Containers
This senior-level guide covers Node Core Dump Analysis with production trade-offs for reliability, security, and cost.
Posted inAWS System Design
API Gateway WebSocket Fan-Out: Coalesce Pushes After Reconnect Storms
This senior-level guide covers API Gateway WebSocket Fan-Out with production trade-offs for reliability, security, and cost.
Posted inAWS Machine Learning System Design
Feature Stores vs Inline Compute: Real-Time Decisions Without Training Skew
This senior-level guide covers Feature Stores vs Inline Compute with production trade-offs for reliability, security, and cost.