simba SKILL.md skillA
simba 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/simba@git:20261020.70a133fPins git:20261020.70a133f 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/Simba/skills/simba/SKILL.md- Versions recorded
- 11
- Latest version
- git:20261020.70a133f, committed Oct 20, 2026
- First version recorded
- May 27, 2026
- Size
- 9,781 bytes
- Repository stars
- 2
- License
- Apache-2.0
Guide for using Simba 5, the JVM leader-election and distributed-lock library, in applications. Use when adding leader election, leader-only work (runWhileLeader, schedule, @SimbaScheduled), partitioned work (group, @SimbaPartitioned), distributed locks (lock / LockTerm), configuring the JDBC (MySQL, PostgreSQL), Redis or Zookeeper backend, integrating with Spring Boot, using fencing tokens, tuning session timing, or migrating from Simba 4.x. For test-focused work, use the simba-testing skill…
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
# Simba 5 — Sessions, Leases and Terms Simba gives JVM applications leader election and distributed locks over a backend they already run: MySQL 8 or PostgreSQL 14+ (`simba-jdbc`), Redis 7 (`simba-redis` + `simba-spring-redis`) or Zookeeper (`simba-zookeeper`). Java 21+; the starter needs Spring Boot 4 (4.1+); Kotlin users need Kotlin 2.2+. Full docs: https://simba.ahoo.me/. ## Model in Five Lines 1. One `Simba` client per process opens **one session** on the backend and keeps it alive every `renewInterval`. 2. Elections, locks and partition groups contend for **leases** (names of 1–128 chars `[A-Za-z0-9._:-]`) attached to that session; the session expiring frees them all. 3. Winning a lease gives a **`Term`**: `name`, `token` (fencing token, strictly increasing per name), `isValid`, `remaining()`, `ensureValid(min)`, `revoked`. 4. Every `onElected(term)` is followed by exactly one `onRevoked(term, reason)`. 5. A term is a *weakly consistent* view. Never promise "no split-brain": a paused process can still write after its term ended. Resources that must reject stale writers check `term.token` (accept `>=` highest, reject lower, atomically with the write). …
Read the whole file at its exact version.
How to install
mdr add ahoo-wang/skills/simba@sha256:383a692afd51d4d2The line at the top of this page pins the label git:20261020.70a133f, 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_lmducwrfx6sp32ew)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 11 versions of this file, between May 27, 2026 and Oct 20, 2026, about one every 15 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261020.70a133f latest | 2026-10-20 | 70a133f | 9,781 B | A | view · diff |
| git:20261019.d021353 | 2026-10-19 | d021353 | 8,608 B | A | view · diff |
| git:20261019.4e01817 | 2026-10-19 | 4e01817 | 8,474 B | A | view · diff |
| git:20261013.0496a70 | 2026-10-13 | 0496a70 | 13,451 B | A | view · diff |
| git:20261012.0c00884 | 2026-10-12 | 0c00884 | 13,451 B | A | view · diff |
| git:20261010.7e97337 | 2026-10-10 | 7e97337 | 13,346 B | A | view · diff |
| git:20261010.4fd6ec9 | 2026-10-10 | 4fd6ec9 | 12,882 B | A | view · diff |
| git:20260821.ec5fc28 | 2026-08-21 | ec5fc28 | 12,958 B | A | view · diff |
| git:20260818.7aa53a5 | 2026-08-18 | 7aa53a5 | 12,958 B | A | view · diff |
| git:20260818.2ff7b22 | 2026-08-18 | 2ff7b22 | 12,958 B | A | view · diff |
| git:20260527.808710c | 2026-05-27 | 808710c | 11,231 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 (9781 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_lmducwrfx6sp32ew GET https://markdownregistry.com/api/v1/resolve?ref=ahoo-wang/skills/simba GET https://markdownregistry.com/api/v1/blob/383a692afd51d4d2f62790286f733d30913d20408439f76f5430175f95fd3d61
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.
More from ahoo-wang/skills
Every file in ahoo-wang/skills