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Pontoporeia c86781b9be admin/system: move status panel above tabs, add collapse toggle

Status (services, PHP env, disk) is now always visible above the log/config
tab bar rather than being one of the tab targets:

- Status section rendered unconditionally above <nav class="sys-tabs">.
- Services grid, PHP info grid and disk bar grouped inside a collapsible
  <section> with a header row containing the cache-freshness badge and a
  toggle button (▲ Réduire / ▼ Développer).
- Collapse state persisted in localStorage so the preference survives
  page reloads (e.g. when switching log tabs).
- Tab bar now only contains the three log tabs + nginx config; the 'Statut'
  tab is removed. Legacy ?tab=status URLs fall through to nginx_access.
- PHP/disk sub-sections laid out in a 2-col grid inside the status panel;
  responsive single-col below 700px.
- system.css: new .sys-status-section / .sys-status-header /
  .sys-status-toggle / .sys-status-meta rules added.
- aria-current="page" added to active tab links.
- todo/03-system-cache.md: all items marked done; notes added explaining
  why log caching was deliberately omitted.

2026-04-06 15:32:41 +02:00

1.9 KiB

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System Page Caching - Database-Backed Status Cache

Problem

The admin system page (/admin/system.php) runs expensive operations on every load:

systemctl subprocess calls (~4 checks × ~100ms each)
curl HTTP self-check (~200-500ms)
disk_total_space()/disk_free_space() (fast but unnecessary per-request)
Log file tail + filesize + filemtime (I/O bound)
Nginx config file reading

Solution: `system_cache` table + background refresh

Add system_cache table to schema: CREATE TABLE system_cache (key TEXT PRIMARY KEY, value TEXT NOT NULL, updated_at INTEGER NOT NULL)
Add migration storage/migrations/007_system_cache.sql
Add SystemCache class (src/SystemCache.php) with methods:
- get(string $key, int $maxAgeSec = 60): ?array
- set(string $key, array $data): void
- isStale(string $key, int $maxAgeSec = 60): bool
Refactor system.php status section:
1. Check SystemCache::get('system_status', 120) — 2-minute TTL
2. If cache hit → render from cache, show “mis en cache il y a X sec” label
3. If cache miss → run checks, store in cache, render
4. Add ?refresh=1 GET param to force-bypass cache
Refactor system.php log sections — avoid re-reading on every tab switch; only read the active tab’s log
Cache disk info separately with 5-minute TTL: SystemCache::get('disk_info', 300)
Cache PHP info separately with 1-hour TTL: SystemCache::get('php_info', 3600)

Notes

Log caching deliberately omitted: tail output is inherently real-time and caching even 30s would show stale data during the moments it matters most (deploys, errors). The existing tab guard already ensures only the active log file is read.
nginx config could be cached but file() on a small static config file is negligible; not worth the added complexity.
A future improvement could stream log tabs via fetch() to avoid full-page reloads on tab switch.

1.9 KiB Raw Blame History Unescape Escape

System Page Caching - Database-Backed Status Cache

Problem

Solution: system_cache table + background refresh

Notes

1.9 KiB

Raw Blame History

Solution: `system_cache` table + background refresh