daily-notification-plugin/doc/PERFORMANCE.md

Performance Characteristics

Purpose: Expected performance characteristics and benchmarks for Daily Notification Plugin operations.
Owner: Development Team
Last Updated: 2025-12-22
Status: active

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Expected Operation Times

Scheduling Operations

• Schedule creation: < 50ms (typical), < 100ms (p95)
• Schedule update: < 50ms (typical), < 100ms (p95)
• Schedule deletion: < 50ms (typical), < 100ms (p95)

Recovery Operations

• Cold start recovery: < 500ms (typical), < 1000ms (p95)
• Force stop recovery: < 500ms (typical), < 1000ms (p95)
• Boot recovery: < 1000ms (typical), < 2000ms (p95)

Database Operations

• Query (getEnabled): < 50ms (typical), < 100ms (p95)
• Query (getById): < 10ms (typical), < 20ms (p95)
• Insert/Update: < 50ms (typical), < 100ms (p95)

Memory Footprint

• In-memory metrics: ~10KB per 100 metrics
• Event logs: ~5KB per 100 events
• Total overhead: < 100KB (development mode), < 10KB (production, metrics disabled)

Platform-Specific Considerations

iOS

• Background task time limits: ~30 seconds
• CoreData auto-migration: typically < 100ms

Android

• WorkManager execution time limits: flexible (minutes)
• Room migrations: typically < 200ms

Web

• No background execution limits
• No native database operations

Measurement Methodology

Metrics are collected using:

• performance.now() (Web/TypeScript)
• System.currentTimeMillis() (Android)
• Date.timeIntervalSince() (iOS)

All timings are in milliseconds.

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See also:

• SYSTEM_INVARIANTS.md — Enforced system invariants
• docs/progress/03-TEST-RUNS.md — Test run history