MechaCat02 c80ee194f2 fix(manager-core): F-P-008 concurrent trigger hydration in list_for_app (wall-clock fix)
TriggerRepo::list_for_app selected parent rows then called
hydrate_one(...) per row serially — one SELECT against the kind-
specific details table per trigger. For N triggers on an app, that's
N+1 queries serialized on every dashboard `GET /apps/{id}/triggers`.

This commit shrinks the wall-clock cost via buffered concurrency
(`try_buffered(8)`): each row's details fetch still runs but they run
in parallel up to a small fan-out cap. Cuts dashboard load time from
sum(N latencies) to max(N latencies) / 8.

Collapsing to a single per-kind LEFT JOIN (the audit's preferred shape)
would cut the query count to ~7 — large enough to defer to v1.2 as
documented in the inline comment.

AUDIT.md anchor: F-P-008 (partial: wall-clock only; round-trip count
deferred).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-06-07 20:20:29 +02:00

PiCloud

A lightweight, self-hosted, event-driven serverless compute platform. Upload a Rhai script, get an HTTP endpoint. Designed to run on a single modest server with no idle CPU cost, and to scale out to a small cluster when you need it.

Status: Phase 1 — MVP scaffolding in progress.

The authoritative design lives in serverless_cloud_blueprint.md.

Why

Existing serverless platforms are either cloud-locked, heavyweight, or both. PiCloud aims for the opposite end of the spectrum: one binary, one database, one reverse proxy — running on hardware you already own.

Architecture (one paragraph)

PiCloud splits into three logical services — manager (control plane: scripts, schedules, dashboard), orchestrator (per-node event ingress and dispatch), and executor (per-node Rhai sandbox) — each backed by a *-core Rust library. In MVP they run in a single process; in cluster mode they run as three binaries with one manager and one orchestrator + executor per node. Caddy fronts everything; PostgreSQL is the single source of truth.

See CLAUDE.md for working notes and serverless_cloud_blueprint.md for the full design.

Quick Start

Coming as scaffolding lands. For now:

# Rust toolchain (pinned via rust-toolchain.toml)
cargo check --workspace

# Run the all-in-one MVP binary (once main.rs is wired up)
cargo run -p picloud

Repository Layout

crates/
  shared/                 cross-cutting types
  executor-core/          Rhai engine + sandbox
  orchestrator-core/      event ingress, dispatch
  manager-core/           control plane
  picloud/                MVP all-in-one binary
  picloud-{manager,orchestrator,executor}/   cluster-mode binaries (skeleton)
dashboard/                SvelteKit
caddy/                    Caddyfile
docker/                   Dockerfiles
docs/
  git-workflow.md         Trunk-based workflow

Contributing

See docs/git-workflow.md for the branching and commit conventions. TL;DR: trunk-based, short-lived branches, Conventional Commits, no force-pushing main.

License

TBD.

Description
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