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How WhatsApp Works Without Internet: Offline Messaging and Sync Explained
Ever tried sending a WhatsApp message while sitting in a train with zero network? Or when your phone is on airplane mode? You type the message, hit send, and it immediately pops up on your screen with
devwithabrar.hashnode.dev5 min read
#system-design#mobile-development#architecture#networking#offline-first#messaging#software-engineering#distributed-systems#chaicode#chaicohort#chaicode-mobile-dev-cohort-2026
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