Jan 18, 2020 · Mobile Development

Understanding iOS Push Notifications: Remote and Local Push, History, and Implementation Details

This article provides a comprehensive overview of iOS push notification mechanisms, covering remote and local push differences, device token acquisition across iOS versions, silent push constraints, scheduling nuances, and the evolution of notification APIs from iOS 7 to iOS 13, with practical code examples.

APNSObjective‑CPush Notification

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Understanding iOS Push Notifications: Remote and Local Push, History, and Implementation Details

21CTO

Nov 10, 2019 · Mobile Development

How We Built a Scalable Mobile IM System for a Travel App

This article details the design and implementation of a scalable mobile instant‑messaging system for a travel app, covering architecture, data‑channel handling, subscription mechanisms, UI rendering, message de‑duplication, local push strategies, reconnection logic, and future upgrades to WebSocket.

Instant MessagingMessage DeduplicationMobile

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How We Built a Scalable Mobile IM System for a Travel App