nw-sd-patterns-advanced SKILL.md skillA
nw-sd-patterns-advanced from nwave-ai/nwave is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add nwave-ai/nwave/nw-sd-patterns-advanced@git:20260406.b65a761Pins git:20260406.b65a761 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- nwave-ai/nwave
- Path
nWave/skills/nw-sd-patterns-advanced/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260406.b65a761, committed Apr 6, 2026
- Size
- 7,450 bytes
- Repository stars
- 633
- License
- MIT
Advanced distributed patterns - event sourcing, CQRS, saga, stream processing, append-only log, exactly-once delivery, sequencer, double-entry ledger, erasure coding, order book, watermarks.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Advanced Distributed Patterns
## Event Sourcing
**Problem**: need audit trail, state reconstruction, temporal queries.
**Core idea**: store every state change as immutable event, not current state.
```
Events: [WalletCreated: balance=0] [Deposited: +100] [Transferred: -30] [Deposited: +50]
Current state: 0 + 100 - 30 + 50 = 120
```
**Benefits**: complete audit trail | temporal queries ("balance on Jan 15?") | rebuild state from scratch | debug by replay | event-driven architecture
**Challenges**: computing state requires replaying all events -- use snapshots | schema evolution (events immutable) | store grows indefinitely -- compaction/archiving | eventual consistency for read models
**Snapshots**: periodically save computed state | current state = latest snapshot + events after it | trade-off: recovery speed vs storage
**Used in**: payment systems, banking, trading platforms, audit-critical systems
## CQRS (Command Query Responsibility Segregation)
**Problem**: read and write models have different optimization needs.
**Architecture**: Commands -> Write Model (normalized, consistency) -> events/CDC -> Read Model (denormalized, query-optimized) <- Queries
…Read the whole file at its exact version.
How to install
mdr add nwave-ai/nwave/nw-sd-patterns-advanced@sha256:316693272d8655dbThe line at the top of this page pins the label git:20260406.b65a761, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_4zw2nhjiwuktuqib)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Apr 6, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (7450 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
nwave-ai/nwave · 633 stars · license MIT · pushed 2026-11-07 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_4zw2nhjiwuktuqib GET https://markdownregistry.com/api/v1/resolve?ref=nwave-ai/nwave/nw-sd-patterns-advanced GET https://markdownregistry.com/api/v1/blob/316693272d8655db6ca27e4bf18ea706a03ae1423f46f401a603c6a0dc29d4e8
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.