Skill UI

Mastery of advanced system design patterns, including Event Sourcing, CQRS, and Event-Driven Architecture (EDA). This skill covers designing event stores, building read/write projections, orchestrating sagas, and managing eventual consistency. It is ideal for building complex microservices that require guaranteed audit trails, historical state querying (temporal queries), and robust handling of business workflows with compensating actions.

Guide for designing, implementing, and scaling event stores in event-sourced systems, covering requirements, technology comparisons, PostgreSQL schemas, and Python persistence patterns.

OpenSearch is a distributed search and analytics engine integrated into KubeSphere's WizTelemetry Observability Platform. It is designed to efficiently store, index, and analyze vast amounts of observability data, including Kubernetes logs, auditing events, system metrics, and application notifications. Used for building comprehensive monitoring dashboards and deep operational insights.

A comprehensive checklist and methodology for testing Cross-Site Scripting (XSS) vulnerabilities. Covers all major types, including Stored, Reflected, DOM, and Blind XSS, along with advanced techniques like CSP bypass, polyglot payloads, and event handler injection. Essential for web application security testing and bug bounty hunting to identify and mitigate malicious script injection risks.

This guide details how to configure Shopify applications across isolated Development, Staging, and Production environments. It establishes separate app instances, API credentials, and stores for each environment, ensuring secure, structured deployments and preventing cross-environment data leakage. Essential for professional SaaS development workflows.

A comprehensive guide to registering, handling, and managing Shopify webhooks and events for e-commerce applications. Learn how to use GraphQL to subscribe to critical topics (orders, products, etc.), implement robust HMAC verification, and, crucially, configure mandatory GDPR compliance handlers required for successful Shopify App Store submission. Covers event handler patterns and API management.