system-design-building-blocks skillA
system-design-building-blocks is agent-read markdown (skill) from hoangnguyen0403/agent-skills-standard: Select infrastructure components by the constraint each removes: load balancers, caches and invalidation, queues and pub/sub, CDN, API gateway, rate limiting, consistent hashing. Use when choosing cache, queue, replica, or edge layers; defer engine tuning to the database category..
Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.
What the file says
# System Building Blocks ## **Priority: P1 (HIGH)** Add a component only to remove a named constraint. Every component adds failure modes and cost. ## Selection Table | Constraint observed | Component | Cost accepted | | --- | --- | --- | | One instance saturates CPU or connections | Horizontal scaling behind a load balancer | Statelessness required; session moves to a store | | Read QPS exceeds store ceiling; data tolerates staleness | Read-through cache | Stale reads up to TTL; invalidation complexity | | Write spikes exceed sustainable store throughput | Queue plus async worker | Eventual completion; needs idempotent consumers | | Slow non-critical work blocks the request path | Background job or event | Extra delivery guarantees to reason about | | Static or media bytes dominate egress | CDN | Cache purge lag; origin still needed for misses | | Cross-cutting authn, quota, routing repeated per service | API gateway | Central chokepoint; must be HA | | One tenant or key can exhaust capacity | Rate limiter or admission control | Rejections need clear client contracts | …
Read the whole file at its exact version.
How to install
mdr add hoangnguyen0403/agent-skills-standard/system-design-building-blocks@git:20260830.00e03f4mdr add hoangnguyen0403/agent-skills-standard/system-design-building-blocks@sha256:71236855db7b29b5Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
[](https://markdownregistry.com/a/art_6r5mvjhwdcybxkhk)
1 badge views in 30 days
Versions
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 (3879 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
hoangnguyen0403/agent-skills-standard · 571 stars · license MIT · pushed 2026-09-24 · branch develop
API
GET https://markdownregistry.com/api/v1/artifacts/art_6r5mvjhwdcybxkhk GET https://markdownregistry.com/api/v1/resolve?ref=hoangnguyen0403/agent-skills-standard/system-design-building-blocks GET https://markdownregistry.com/api/v1/blob/71236855db7b29b5753c059c030c092a5295839d4ee9434187779b6b4c291785
Your agent 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.
More from hoangnguyen0403/agent-skills-standard
Every file in hoangnguyen0403/agent-skills-standard