Files
ngit-grasp/docs/how-to
DanConwayDev 9ab07840fc feat(metrics): export service resource usage
The stabilization acceptance criteria require sustained CPU and memory
evidence, but ngit-grasp currently exposes neither through its Prometheus
endpoint. Manual systemd sampling is service-specific but does not provide a
durable application time series.

Enable rust-prometheus's Linux process collector and explicitly register it
with ngit-grasp's private registry. Also read the service's cgroup v2 CPU and
memory counters so the headline metrics include every child Git process. The
process-only metrics remain available to distinguish daemon cost from Git
work. Document both levels and the PromQL rate used to derive CPU use.

The cgroup metrics are omitted gracefully when the binary is not running in a
readable Linux cgroup v2 hierarchy. They follow the existing global metrics
switch: no separate configuration surface is added. Host-wide contention and
unrelated services remain deliberately excluded.

Validated with:
- git diff --check
- nix develop -c cargo test --lib metrics::tests::test_metrics_with_repository_counting

The repository-wide cargo fmt check still reports pre-existing formatting in
unrelated sync modules and tests; src/metrics/mod.rs was formatted directly.
2026-08-08 12:54:28 +00:00
..
2025-11-04 10:25:53 +00:00

How-To Guides

Task-oriented documentation - Practical solutions to common problems.


What Are How-To Guides?

How-to guides are recipes that show you how to solve specific problems or accomplish particular tasks.

Characteristics:

  • ✅ Task-oriented (solve a problem)
  • ✅ Practical (actionable steps)
  • ✅ Assume basic knowledge
  • ✅ Focus on results
  • ✅ Can be followed in any order

Not how-to guides:

  • ❌ Complete lessons for beginners (those are Tutorials)
  • ❌ Technical specifications (those are Reference)
  • ❌ Conceptual discussions (those are Explanation)

Available How-To Guides

Configure Nix Flakes

Problem: Set up reproducible development environment
Difficulty: Intermediate

You'll learn:

  • Enable Nix flakes
  • Enter development environment
  • Work with subprojects
  • Troubleshoot common issues

Test Sync Against Production Data

Problem: Debug and improve sync using real-world data
Difficulty: Intermediate

You'll learn:

  • Run sync against production relays
  • Sanitize logs for LLM analysis
  • Identify common issues and patterns
  • Iteratively improve sync behavior

Planned How-To Guides

Deploy ngit-grasp

Status: 🔜 Planned (waiting for main server)

Problem: Deploy to production
You'll learn:

  • Server requirements
  • Reverse proxy setup (nginx/Caddy)
  • SSL/TLS configuration
  • Monitoring and logging

Run Compliance Tests

Status: 🔜 Planned

Problem: Test GRASP compliance
You'll learn:

  • Set up test relay
  • Run integration tests
  • Interpret results
  • Add custom tests

Upgrade nostr-sdk

Status: 🔜 Planned

Problem: Handle breaking changes in nostr-sdk
You'll learn:

  • Check for breaking changes
  • Update dependencies
  • Fix compilation errors
  • Test after upgrade

Configure Authentication

Status: 🔜 Planned (feature not yet implemented)

Problem: Secure your relay
You'll learn:

  • Enable authentication
  • Configure allowed users
  • Set up rate limiting
  • Monitor access

Backup and Restore

Status: 🔜 Planned

Problem: Protect your data
You'll learn:

  • Backup Git repositories
  • Backup Nostr events
  • Restore from backup
  • Automate backups

How to Use How-To Guides

  1. Find your problem - Browse or search for what you need
  2. Check prerequisites - Make sure you have required knowledge
  3. Follow the steps - Adapt to your specific situation
  4. Solve and move on - No need to read everything

Not sure if this is what you need?


Contributing How-To Guides

When writing a how-to guide:

DO:

  • ✅ Start with the problem/goal
  • ✅ List prerequisites clearly
  • ✅ Provide concrete steps
  • ✅ Include troubleshooting
  • ✅ Show examples
  • ✅ Link to related docs

DON'T:

  • ❌ Teach basics (link to Tutorials)
  • ❌ Explain every concept (link to Explanation)
  • ❌ List all options (link to Reference)
  • ❌ Make it a tutorial (stay focused on the task)

Template:

# How-To: [Task/Problem]

**Problem:** [What you're trying to accomplish]  
**Difficulty:** [Beginner/Intermediate/Advanced]  
**Time:** [Estimated time]

## Prerequisites
- [Required knowledge/tools]

## Solution

### Step 1: [Action]
[Instructions]

### Step 2: [Action]
[Instructions]

## Troubleshooting

### [Common problem]
**Solution:** [How to fix]

## Related Documentation
- [Links to relevant docs]

See Diátaxis: How-To Guides for detailed guidance.


Part of the ngit-grasp documentation using the Diátaxis framework.