cosid-strategy-guide SKILL.md skillA
cosid-strategy-guide from ahoo-wang/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add ahoo-wang/skills/cosid-strategy-guide@git:20261029.b6d8370Pins git:20261029.b6d8370 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- ahoo-wang/skills
- Path
sources/CosId/skills/cosid-strategy-guide/SKILL.md- Versions recorded
- 6
- Latest version
- git:20261029.b6d8370, committed Oct 29, 2026
- First version recorded
- May 27, 2026
- Size
- 6,582 bytes
- Repository stars
- 2
- License
- Apache-2.0
Choose a CosId 5 ID generation strategy for Java distributed systems. Use when the user compares snowflake, cosid80, segment, periodic-segment, uuidv7 and custom, or asks about id representation, layouts, ordering, clock sensitivity, JavaScript safety, which store (JDBC, Redis, MongoDB, ZooKeeper, cosid-server) to coordinate with, gaps, throughput, or production tradeoffs. Do not use for implementation-only requests after the strategy is fixed; use cosid-spring-boot or cosid-manual-integration…
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
# Choose a CosId Strategy Recommend one strategy from explicit requirements. Do not default to the largest benchmark number. ## Workflow 1. Confirm the target CosId major version. In a CosId checkout, read `gradle.properties` (5.x on `main`, 4.x on the `4.x` branch). This skill describes **5.x**; 5.0 is not compatible with 4.x, and the offline `cosid-migration` tool is the only bridge. 2. Collect the id type, ordering scope, peak and burst rate, instance count, JavaScript exposure, acceptable gaps, available infrastructure, and outage behaviour. 3. Recommend one primary strategy. Add a fallback only when a real constraint creates a close tradeoff. 4. State the operational cost and the exact ordering guarantee. 5. Hand implementation to `$cosid-spring-boot` or `$cosid-manual-integration`. ## Decision Table | Strategy | Output | Ordering | Coordination | Main constraint | |---|---|---|---|---| | `snowflake` | `long` (≤ 63 bits), text through a codec | locally monotonic; globally trend-ordered by time | a machine slot leased as a time window (`machine.leased`) or a static slot | `2^bits` concurrent instances; issuing pauses at the window ceiling when renewals fail | …
Read the whole file at its exact version.
How to install
mdr add ahoo-wang/skills/cosid-strategy-guide@sha256:0ba2102bce51eb57The line at the top of this page pins the label git:20261029.b6d8370, 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_22shrbmnnloichn4)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 6 versions of this file, between May 27, 2026 and Oct 29, 2026, about one every 31 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261029.b6d8370 latest | 2026-10-29 | b6d8370 | 6,582 B | A | view · diff |
| git:20261027.4a2e10f | 2026-10-27 | 4a2e10f | 5,541 B | A | view · diff |
| git:20261012.0c00884 | 2026-10-12 | 0c00884 | 5,163 B | A | view · diff |
| git:20260818.2ff7b22 | 2026-08-18 | 2ff7b22 | 5,141 B | A | view · diff |
| git:20260817.88affa1 | 2026-08-17 | 88affa1 | 10,829 B | A | view · diff |
| git:20260527.808710c | 2026-05-27 | 808710c | 10,739 B | A | view |
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 (6582 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
ahoo-wang/skills · 2 stars · license Apache-2.0 · pushed 2026-11-05 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_22shrbmnnloichn4 GET https://markdownregistry.com/api/v1/resolve?ref=ahoo-wang/skills/cosid-strategy-guide GET https://markdownregistry.com/api/v1/blob/0ba2102bce51eb5747eef441512c9e8b926b61558804744ecebecd12a6b50972
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.
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