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ba7814c6dc
Add a TTL-based cache for the expensive checks on the admin system page,
eliminating repeated systemctl subprocess calls (~4×~100ms), curl self-pings
(~200-500ms), disk_*_space() and PHP ini reads on every page load.
Changes:
- storage/migrations/007_system_cache.sql: new migration creating the
system_cache table (key TEXT PK, value TEXT, updated_at INTEGER)
- storage/schema.sql: system_cache table added before pages table
- Applied migration to live storage/posterg.db
- src/SystemCache.php: new class with get/set/isStale/ageSeconds/invalidate;
uses SQLite INSERT … ON CONFLICT upsert; no external dependencies
- src/Database.php: added getDatabasePath(): string accessor
- public/admin/system.php:
- Bootstrap SystemCache at request start using the existing DB PDO handle
- system_status: cached with 2-min TTL (systemctl + curl checks)
- php_info: cached with 1-hour TTL (PHP ini values are runtime-constant)
- disk_info: cached with 5-min TTL (total/free/used/pct tuple)
- Logs section: unchanged — always reads live log tail per active tab
- ?refresh=1 GET param invalidates all three cache keys before rendering
- Status panel heading shows cache badge: '⚡ Cache — il y a Xs' (hit)
or '⟳ Actualisé' (miss/fresh), styled via new .sys-cache-badge rules
- public/assets/css/system.css: .sys-cache-badge / --hit / --miss styles
posterg
Répertoire des travaux de fin d'études de l'ERG (École de Recherche Graphique).
Requirements
- PHP 8.4
- SQLite3 (
php8.4-sqlite3) - nginx (production)
Project structure
posterg/
├── public/ # DocumentRoot — web-accessible only
│ ├── admin/ # Admin panel (session-authenticated)
│ ├── assets/ # CSS, fonts, icons
│ ├── media.php # Controlled file serving (covers, PDFs)
│ └── *.php # Public pages (index, search, tfe, apropos)
├── src/ # PHP classes (not web-accessible)
│ ├── AdminAuth.php
│ ├── Database.php
│ ├── RateLimit.php
│ └── config.php
├── templates/ # Shared PHP template partials
├── config/ # Bootstrap and credentials (not web-accessible)
├── storage/ # Database and uploaded files (not web-accessible)
│ ├── schema.sql
│ ├── test.db
│ └── fixtures/
├── tests/
├── scripts/ # Dev and server management scripts
│ ├── setup-dev.sh
│ ├── deploy-server.sh # Run on server with sudo to apply nginx config
│ └── manage-admin-users.sh # Run on server with sudo to manage htpasswd
└── nginx/ # nginx config and reference files
└── posterg.conf
Uploaded files (PDFs, covers) live in storage/ — outside the webroot — and are
served exclusively through public/media.php, which validates paths and MIME types.
Development
just setup # first-time: installs dev dependencies
just serve # http://localhost:8000 (public) and /admin/
just test # run test suite
Admin credentials in development are set via config/admin_credentials.php
(see config/admin_credentials.example.php).
Deployment
Files are pushed to the server with rsync — there is no repo on the remote.
just deploy # rsync app files → posterg:/var/www/posterg/
just deploy-db # push local test.db → remote (only if remote DB is absent)
deploy-db refuses to run if a database already exists on the server, to avoid
accidental overwrites of production data.
First-time server setup
ssh posterg
sudo mkdir -p /var/www/posterg
sudo chown www-data:posterg /var/www/posterg
sudo chmod 775 /var/www/posterg
exit
Then deploy once, copy nginx config, and apply:
just deploy
rsync -v nginx/posterg.conf posterg:/tmp/posterg.conf
ssh posterg "sudo bash /var/www/posterg/scripts/deploy-server.sh"
ssh posterg "sudo systemctl reload nginx"
Admin users (htpasswd)
ssh posterg "sudo bash /var/www/posterg/scripts/manage-admin-users.sh"
Security notes
- Admin panel protected by nginx
auth_basic+ PHP session (AdminAuth) - Uploads stored outside webroot, served via controlled
media.php - Rate limiting on public search (
src/RateLimit.php) - See
docs/TODO.SECURITY.mdfor outstanding items