VanaraVANARAagentsSubscribe — $10/mo
proskillv1.0.0

event-driven-architecture

Design event-driven systems that stay consistent — queues vs streams, pub/sub topology, idempotent consumers, the transactional outbox, sagas for multi-service workflows, dead-letter queues, ordering guarantees, and event schema evolution without breaking consumers.

$npx vanara install event-driven-architecture

Included with Vanara Pro ($10/mo) — unlocks all 206 items. See pricing →

Overview

Events decouple services in space and time — and replace one shared-database consistency model with a dozen smaller contracts you must now design explicitly: delivery (at-least-once, always), ordering (per-key at best), atomicity (the outbox), and failure routing (DLQs). This skill is the working reference for those contracts. Deep detail in references/; the outbox and saga in runnable form in exa

What it covers

Details

Tier
Pro — $10/mo
Version
1.0.0
Depth
3 references · 2 examples · 0 runnable scripts
Runs on
Your own Claude Code — no API keys
api-paginationImplement correct, fast API pagination — cursor vs offset trade-offs, opaque cursor encoding, stable sort keys, page-size limits, total-count costs, and consumer-side iteration that survives inserts, deletes, and retries. With runnable cursor checks.app-store-optimizationHow to optimize an app-store listing (ASO) for discovery and conversion — title, subtitle, keywords, screenshots, icon, ratings, and the metadata that drives installs. A deep reference with worked Apple and Google listings and a runnable listing linter.audit-loggingDesign tamper-evident audit logs that satisfy security and compliance — what to record (who/what/when/where/outcome), what to never log (secrets/PII), structured immutable events, hash-chaining for tamper-evidence, retention, and access control. A deep reference with runnable validation.background-jobsDesign background job systems that don't lose or double work — enqueue-after-commit, retry policies with jitter, idempotent handlers, visibility timeouts, priority lanes, scheduled and recurring jobs, worker scaling, and observability for async work. With a runnable retry-policy check.backup-and-recoveryDesign and operate a tested backup and disaster-recovery strategy — the 3-2-1 rule, RPO/RTO targets, full vs incremental vs differential, point-in-time recovery, encryption, offsite/immutable copies, retention, and the restore drills that prove a backup actually works.c4-diagrammingDocument software architecture with the C4 model (Context, Container, Component, Code) as text-based diagrams in version control. Covers the four abstraction levels, notation discipline, when to draw each level (and when to stop), supplementary diagrams, and Mermaid/Structurizr tooling.
← All skills