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Backfill

The recent history the daemon replays to a dashboard on connect, so its charts start populated instead of empty. It is served from a bounded ring buffer of the last few hundred samples.

Elsewhere

In data engineering a backfill recomputes a pipeline over a past date range (an Airflow backfill). The magus backfill computes nothing: it replays samples the daemon already holds.

Example

The console's dashboard receives the backfill when it connects to the daemon.

magus server start

Used in

In the docs:

See also

ChangelogEvery change to magus, newest first, in Keep a Changelog format, starting with the unreleased entries. Generated from changes/unreleased/ and releases/*.yaml. SnapshotA point-in-time view of live state (the pool's occupancy or a tick of exported metrics), as opposed to accumulated history. Knowledge graphThe knowledge graph is a deterministic, cache-backed graph of the magus domain (projects, targets, spells, ops, charms, modules, diagnostics, docs, and buzz sources) that agents and humans query instead of grepping. This page covers the schema, the verbs, the file layout, and how to point external graph tools at an export. MCPmagus serves its tools as a Model Context Protocol server, over stdio for the agent host that launches magus mcp, or over Streamable HTTP from magus server.
glossaryexecution-and-caching
Last updated (2df714e8)
Glossary

Op

A single tool-native command a target composes (long form: operation); the middle of the work hierarchy (Spell to Op to Target). Op in full.

Engine

The interpreter a magusfile runs on; magus embeds the Buzz engine. Engine in full.

Broker

The per-user background process that holds this host's capacity: the machine budget every run claims slots from, and the shared services runs keep warm. A run starts it on demand; broker: off in magus.yaml runs without one. Broker in full.

Daemon

The background process a person starts with magus server start. It serves MCP, the console, background jobs and the warm knowledge graph, and adopts nested magus calls into one pool. Daemon in full.

Snapshot

A point-in-time view of live state (the pool's occupancy or a tick of exported metrics), as opposed to accumulated history. Snapshot in full.

Backfill

The recent history the daemon replays to a dashboard on connect, so its charts start populated instead of empty. It is served from a bounded ring buffer of the last few hundred samples. Backfill in full.

Knowledge graph

The queryable graph of a workspace's spells, targets, docs, and code relationships; query it with magus query/explain/path. Knowledge graph in full.

Conventions

This page uses none of the site's convention markers. The full set is on the conventions page.