---
name: jabrena-515-frameworks-micronaut-mongodb
description: "Use when you need MongoDB persistence in Micronaut — including @MongoRepository design, document modeling, indexes, query patterns, and error handling. This should trigger for requests such as Add MongoDB in Micronaut; Review Micronaut Data Mongo design; Improve error handling for Micronaut Mongo operations; Model MongoDB documents for a Micronaut service; Configure Micronaut MongoDB codecs indexes or transactions. Part of Plinth Toolkit"
license: "Apache-2.0"
metadata:
  decimalai-skill-id: "a49dba1a-7758-4220-af5f-b8caca8834b4"
  decimalai-version-id: "43c3505b-1e57-4dc3-a3db-692366d233df"
  decimalai-version: "1"
  decimalai-body-sha256: "7660d971ae953f6e3dce4211fbb3db0d0a7b87e367293ff77c661b50e4b2672f"
  decimalai-name: "jabrena/515-frameworks-micronaut-mongodb"
  decimalai-format: "1"
  decimalai-invocation: "model"
  decimalai-category: "coding"
  decimalai-source: "https://app.decimal.ai/s/jabrena-515-frameworks-micronaut-mongodb@1/SKILL.md"
---
# Micronaut — MongoDB

Apply Micronaut MongoDB guidance with concrete examples for design, implementation, and error handling.

## Constraints

Compile before MongoDB refactors; verify after changes.

- **MANDATORY**: Run `./mvnw compile` or `mvn compile` before applying any change
- **SAFETY**: If compilation fails, stop immediately
- **VERIFY**: Run `./mvnw clean verify` or `mvn clean verify` after applying improvements
- **BEFORE APPLYING**: Read the reference for detailed rules and examples

## When to use this skill

- Add MongoDB in Micronaut
- Review Micronaut Mongo entities/repositories
- Improve duplicate key handling, retries, or optimistic locking in Micronaut Mongo
- Model MongoDB documents for a Micronaut service
- Configure Micronaut MongoDB codecs indexes or transactions

## Workflow

1. **Read reference and assess project context**

Read `references/515-frameworks-micronaut-mongodb.md` and inspect persistence setup before proposing changes.

2. **Gather scope and decide target improvements**

Identify model and consistency requirements and define safe improvements.

3. **Apply framework-aligned changes**

Implement/refactor documents, repositories, indexes, and error handling.

4. **Run verification and report results**

Execute build/tests and summarize what changed, what was verified, and follow-up actions.

## Reference

For detailed guidance, examples, and constraints, see [references/515-frameworks-micronaut-mongodb.md](references/515-frameworks-micronaut-mongodb.md).