Tag: notification-service-extension

All the articles with the tag "notification-service-extension".

• Realm Runs My Whole Chat App — So Why Does It Die in a 24 MB Notification Extension?

  27 Aug, 2026

  Realm crashes at init inside the iOS Notification Service Extension's 24 MB budget. The real causes — schema discovery, an encrypted page cache, cross-process sharing Realm only added in 2023 — and what Signal does instead.

• iOS Has Six Ways to Run in the Background — Which One Actually Delivers My Message?

  20 Aug, 2026

  beginBackgroundTask, BGTaskScheduler, URLSession, silent push, PushKit, NSE — a decision guide to iOS background execution, tested against an E2EE messaging core.