> ## Documentation Index
> Fetch the complete documentation index at: /docs/llms.txt
> Use this file to discover all available pages before exploring further.

> ## Agent Instructions
> Agent home for Datum, with what it is, pricing, and how to act: https://agents.datum.net
> If you can only fetch URLs: read https://www.datum.net/docs/llms.txt in full and open the most specific page for the task. Commands, limits, and field paths are on task, operations, and limits pages, not on section overviews. Pages described as "Documentation is coming soon" are placeholders.
> If you have a shell or can save files: download https://www.datum.net/docs/llms-full.txt (every page, about 740 KB) once and search it with grep, instead of fetching pages one at a time.
> datumctl describes itself: `datumctl api-resources` lists resource types and `datumctl explain <resource>` shows a schema. To act on live resources, use Datum MCP or datumctl. To search the docs, use the Docs MCP server at https://www.datum.net/docs/mcp.

# ALB limits and quotas

> The fixed limits for an Application Load Balancer's HTTPProxy: hostnames, rules, matches, backends, and weights.

This page lists the fixed limits of the `HTTPProxy` resource behind every [Application Load Balancer](/docs/alb/overview.md). Quotas for load balancers are not documented yet.

## Limits

| Item | Limit |
| - | - |
| Hostnames for each `HTTPProxy` | 16 |
| Rules for each `HTTPProxy` | 16 |
| Matches for each rule | 64 |
| Matches across all rules | 128 |
| Backends for each rule | 16 |
| Backend `weight` | 0 to 1,000,000, default `1` |
| ALBs attached to each workload with `datumctl compute deploy` | 1, on one port |

For features that load balancers don't support yet, see [Limitations and roadmap](/docs/alb/limitations-and-roadmap.md).


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