Total 50,523 skills, Backend Development has 4135 skills
Showing 12 of 4135 skills
Complete guide for Axum web framework including routing, extractors, middleware, state management, error handling, and production deployment
Prevent race conditions across multiple instances. Only one instance can hold a lock at a time. Automatic expiration prevents deadlocks.
Database operations for Supabase: query/write/migration/logs/type generation. Triggers: query/statistics/export/insert/update/delete/fix/backfill/migrate/logs/alerts/type generation. Does not trigger for: pure architecture discussion or code planning. Write operations require confirmation; UPDATE/DELETE without WHERE is refused. MCP is optional — works with CLI/Console too.
Provides comprehensive guidance for Express.js framework including routing, middleware, request handling, templating, and API development. Use when the user asks about Express, needs to create Express applications, set up routes, implement middleware, or build REST APIs.
Hookdeck Outpost — open-source infrastructure for sending webhooks and events to user-preferred destinations (HTTP, SQS, RabbitMQ, Pub/Sub, EventBridge, Kafka). Use when building a SaaS platform that needs to deliver events to customers.
Analyzes legacy COBOL programs and JCL jobs to assist with migration to modern Java applications. Extracts business logic, identifies dependencies, generates migration reports, and creates Java implementation strategies. Use when working with mainframe migration, COBOL analysis, legacy system modernization, JCL workflows, or when users mention COBOL to Java conversion, analyzing .cbl/.CBL/.cob files, working with copybooks, or planning Java service implementations from COBOL programs.
MongoDB document database with aggregation pipeline and Atlas. Use for document storage.
GoLand Go IDE with debugging and testing. Use for Go development.
F# functional-first programming on .NET. Use for .fs files.
Complete Stripe payments integration with subscriptions, webhooks, and customer portal. Use when adding billing to a SaaS application with subscription tiers, usage-based pricing, or one-time payments.
Implement subscription-tier aware API rate limiting with sliding window algorithm. Use when building SaaS APIs that need per-user or per-tier rate limits with Redis or in-memory storage.
Async job processing with validated state transitions, progress tracking, and asset linking. Ensure jobs always reach terminal states with proper error handling.