🔧 Aktualisierung der Backend-Logik und Optimierung der SQLite-Datenbankkonfiguration für Raspberry Pi: Hinzufügen spezifischer Optimierungen, Verbesserung der Fehlerbehandlung und Protokollierung. Einführung von Caching-Mechanismen und Anpassungen für schwache Hardware. 📈
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278
backend/setup.sh
278
backend/setup.sh
@@ -233,6 +233,41 @@ net.core.wmem_default = 262144
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# Schutz vor Time-Wait-Assassination
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net.ipv4.tcp_rfc1337 = 1
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# ===================================================================
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# RASPBERRY PI PERFORMANCE-OPTIMIERUNGEN FÜR WEBAPP
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# ===================================================================
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# Memory Management für schwache Hardware optimieren
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vm.swappiness = 10
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vm.dirty_ratio = 15
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vm.dirty_background_ratio = 5
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vm.vfs_cache_pressure = 50
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vm.min_free_kbytes = 8192
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vm.overcommit_memory = 1
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# CPU Scheduler für bessere Responsivität
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kernel.sched_min_granularity_ns = 10000000
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kernel.sched_wakeup_granularity_ns = 15000000
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kernel.sched_migration_cost_ns = 5000000
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# Filesystem Performance
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vm.dirty_expire_centisecs = 500
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vm.dirty_writeback_centisecs = 100
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# Memory Compaction für bessere Speichernutzung
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vm.compact_memory = 1
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# OOM Killer weniger aggressiv
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vm.oom_kill_allocating_task = 0
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vm.panic_on_oom = 0
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# Kernel Preemption für bessere Interaktivität
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kernel.sched_rt_runtime_us = 950000
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kernel.sched_rt_period_us = 1000000
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# I/O Scheduler Optimierungen für SD-Karte
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# (wird später per udev-Regel angewendet)
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EOF
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# Sysctl-Einstellungen sofort anwenden
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@@ -978,6 +1013,10 @@ install_dependencies_only() {
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install_npm_dependencies
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generate_ssl_certificate
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# Performance-Optimierungen auch für manuelles Testen
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optimize_webapp_performance
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optimize_static_assets
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# Minimaler Test
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progress "Starte minimalen Test..."
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cd "$APP_DIR"
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@@ -1029,6 +1068,10 @@ install_full_production_system() {
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remove_desktop_environments
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install_minimal_x11
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# Performance-Optimierungen für Raspberry Pi Webapp
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optimize_webapp_performance
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optimize_static_assets
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# Remote-Zugang konfigurieren
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install_remote_access
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configure_firewall
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@@ -1567,6 +1610,241 @@ configure_hostname() {
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fi
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}
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# =========================== WEBAPP PERFORMANCE-OPTIMIERUNG ===========================
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optimize_webapp_performance() {
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log "=== WEBAPP PERFORMANCE-OPTIMIERUNG FÜR RASPBERRY PI ==="
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# Python/Flask spezifische Optimierungen
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progress "Konfiguriere Python-Performance-Optimierungen..."
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# Python Bytecode Optimierung aktivieren
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cat > /etc/environment << 'EOF'
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# Python Performance Optimierungen
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PYTHONOPTIMIZE=2
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PYTHONDONTWRITEBYTECODE=1
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PYTHONUNBUFFERED=1
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PYTHONHASHSEED=random
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# Flask/SQLite Optimierungen
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FLASK_ENV=production
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FLASK_DEBUG=0
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SQLITE_TMPDIR=/tmp
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# Memory Optimierungen
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MALLOC_ARENA_MAX=2
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MALLOC_MMAP_THRESHOLD=131072
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MALLOC_TRIM_THRESHOLD=131072
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EOF
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# Systemd Service-Optimierungen
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progress "Optimiere Systemd-Services für bessere Performance..."
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# Stoppe unnötige Services
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local unnecessary_services=(
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"bluetooth.service"
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"hciuart.service"
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"avahi-daemon.service"
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"cups.service"
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"cups-browsed.service"
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"ModemManager.service"
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"wpa_supplicant.service"
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)
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for service in "${unnecessary_services[@]}"; do
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if systemctl is-enabled "$service" 2>/dev/null; then
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systemctl disable "$service" 2>/dev/null || true
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systemctl stop "$service" 2>/dev/null || true
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log "✅ Service deaktiviert: $service"
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fi
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done
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# Tmpfs für temporäre Dateien
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progress "Konfiguriere tmpfs für bessere I/O Performance..."
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cat >> /etc/fstab << 'EOF'
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# MYP Performance Optimierungen - tmpfs für temporäre Dateien
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tmpfs /tmp tmpfs defaults,noatime,nosuid,size=256m 0 0
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tmpfs /var/tmp tmpfs defaults,noatime,nosuid,size=128m 0 0
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tmpfs /var/log tmpfs defaults,noatime,nosuid,size=64m 0 0
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EOF
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# Logrotate für tmpfs-Logs konfigurieren
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cat > /etc/logrotate.d/myp-tmpfs << 'EOF'
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/var/log/*.log {
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daily
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missingok
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rotate 2
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compress
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notifempty
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create 0644 root root
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copytruncate
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}
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EOF
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# Systemd Journal Einstellungen optimieren
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progress "Optimiere systemd Journal für bessere Performance..."
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mkdir -p /etc/systemd/journald.conf.d
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cat > /etc/systemd/journald.conf.d/myp-performance.conf << 'EOF'
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[Journal]
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# Journal Optimierungen für Raspberry Pi
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Storage=volatile
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RuntimeMaxUse=32M
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RuntimeKeepFree=16M
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RuntimeMaxFileSize=8M
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RuntimeMaxFiles=4
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MaxRetentionSec=1day
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MaxFileSec=1hour
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ForwardToSyslog=no
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ForwardToKMsg=no
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ForwardToConsole=no
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ForwardToWall=no
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EOF
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# Crontab für regelmäßige Cache-Bereinigung
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progress "Installiere automatische Cache-Bereinigung..."
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cat > /etc/cron.d/myp-cache-cleanup << 'EOF'
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# MYP Cache und Memory Cleanup
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# Alle 6 Stunden Cache bereinigen
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0 */6 * * * root /bin/echo 3 > /proc/sys/vm/drop_caches
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# Täglich um 3 Uhr temporäre Dateien bereinigen
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0 3 * * * root /usr/bin/find /tmp -type f -atime +1 -delete 2>/dev/null
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# Wöchentlich Python Cache bereinigen
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0 2 * * 0 root /usr/bin/find /opt/myp -name "*.pyc" -delete 2>/dev/null
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0 2 * * 0 root /usr/bin/find /opt/myp -name "__pycache__" -type d -exec rm -rf {} + 2>/dev/null
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EOF
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# Limits für bessere Ressourcen-Verwaltung
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progress "Konfiguriere System-Limits..."
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cat >> /etc/security/limits.conf << 'EOF'
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# MYP Performance Limits
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* soft nofile 65536
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* hard nofile 65536
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* soft nproc 32768
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* hard nproc 32768
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root soft nofile 65536
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root hard nofile 65536
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EOF
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# Apache/Nginx entfernen falls vorhanden (Konflikt mit Flask)
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progress "Entferne konfliktbehaftete Webserver..."
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local webservers=("apache2" "nginx" "lighttpd")
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for webserver in "${webservers[@]}"; do
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if systemctl is-enabled "$webserver" 2>/dev/null; then
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systemctl stop "$webserver" 2>/dev/null || true
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systemctl disable "$webserver" 2>/dev/null || true
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apt-get remove --purge -y "$webserver" 2>/dev/null || true
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log "✅ Webserver entfernt: $webserver"
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fi
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done
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log "✅ Webapp Performance-Optimierung abgeschlossen:"
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log " 🚀 Python Bytecode-Optimierung aktiviert"
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log " 💾 tmpfs für temporäre Dateien konfiguriert"
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log " 📝 Journal-Logging optimiert"
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log " 🧹 Automatische Cache-Bereinigung installiert"
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log " ⚡ Unnötige Services deaktiviert"
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log " 📊 System-Limits für bessere Performance gesetzt"
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}
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# =========================== CSS/JS OPTIMIERUNG ===========================
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optimize_static_assets() {
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log "=== STATISCHE DATEIEN OPTIMIERUNG ==="
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if [ ! -d "$APP_DIR/static" ]; then
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warning "Static-Ordner nicht gefunden - überspringe Asset-Optimierung"
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return
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fi
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progress "Analysiere und optimiere CSS/JS Dateien..."
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cd "$APP_DIR/static"
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# Erstelle optimierte CSS-Datei durch Kombination kritischer Styles
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progress "Erstelle optimierte CSS-Kombination..."
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cat > css/critical.min.css << 'EOF'
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/* Kritische Styles für ersten Seitenaufbau - Inline-optimiert */
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*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,sans-serif;line-height:1.5}
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.container{max-width:1200px;margin:0 auto;padding:0 1rem}
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.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}
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.btn{display:inline-flex;align-items:center;padding:0.5rem 1rem;border:none;border-radius:0.375rem;font-weight:500;text-decoration:none;cursor:pointer;transition:all 0.15s}
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.btn-primary{background:#3b82f6;color:white}.btn-primary:hover{background:#2563eb}
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.card{background:white;border-radius:0.5rem;padding:1.5rem;box-shadow:0 1px 3px rgba(0,0,0,0.1)}
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.flex{display:flex}.items-center{align-items:center}.justify-between{justify-content:space-between}
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.hidden{display:none}.block{display:block}.inline-block{display:inline-block}
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.text-sm{font-size:0.875rem}.text-lg{font-size:1.125rem}
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.font-medium{font-weight:500}.font-bold{font-weight:700}
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.text-gray-600{color:#4b5563}.text-gray-900{color:#111827}
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.mb-4{margin-bottom:1rem}.mt-6{margin-top:1.5rem}.p-4{padding:1rem}
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.w-full{width:100%}.h-full{height:100%}
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@media(max-width:768px){.container{padding:0 0.5rem}.card{padding:1rem}}
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EOF
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# Erstelle minimale JavaScript-Loader
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progress "Erstelle optimierten JavaScript-Loader..."
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cat > js/loader.min.js << 'EOF'
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/*Minimaler Async Loader für bessere Performance*/
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(function(){var d=document,w=window;function loadCSS(href){var l=d.createElement('link');l.rel='stylesheet';l.href=href;l.media='print';l.onload=function(){this.media='all'};d.head.appendChild(l)}function loadJS(src,cb){var s=d.createElement('script');s.async=true;s.src=src;if(cb)s.onload=cb;d.head.appendChild(s)}w.loadAssets=function(){if(w.assetsLoaded)return;w.assetsLoaded=true;loadCSS('/static/css/tailwind.min.css');loadJS('/static/js/app.min.js')};if(d.readyState==='loading'){d.addEventListener('DOMContentLoaded',w.loadAssets)}else{w.loadAssets()}})();
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EOF
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# Service Worker für besseres Caching
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progress "Erstelle optimierten Service Worker..."
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cat > sw-optimized.js << 'EOF'
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const CACHE_NAME = 'myp-webapp-v1';
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const ASSETS_TO_CACHE = [
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'/',
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'/static/css/critical.min.css',
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'/static/js/loader.min.js',
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'/static/favicon.svg'
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];
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self.addEventListener('install', event => {
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event.waitUntil(
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caches.open(CACHE_NAME)
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.then(cache => cache.addAll(ASSETS_TO_CACHE))
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);
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});
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self.addEventListener('fetch', event => {
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if (event.request.destination === 'image' ||
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event.request.url.includes('/static/')) {
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event.respondWith(
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caches.match(event.request)
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.then(response => response || fetch(event.request))
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);
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}
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});
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EOF
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# Gzip-Kompression für statische Dateien
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progress "Komprimiere statische Dateien..."
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find . -name "*.css" -o -name "*.js" -o -name "*.html" | while read file; do
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if [ -f "$file" ] && [ ! -f "$file.gz" ]; then
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gzip -c "$file" > "$file.gz" 2>/dev/null || true
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fi
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done
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cd "$CURRENT_DIR"
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log "✅ Statische Dateien optimiert:"
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log " 📦 Kritische CSS-Styles kombiniert"
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log " ⚡ Asynchroner Asset-Loader erstellt"
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log " 🗜️ Gzip-Kompression angewendet"
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log " 🔄 Service Worker für Caching installiert"
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}
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# =========================== HAUPTPROGRAMM ===========================
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main() {
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# Erstelle Log-Datei
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