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Matt FrankMay 26, 2026 • 3 min read
Day 49: In-App Chat SDK - AI System Design in Seconds
Building a chat SDK that works reliably across millions of devices and network conditions is...
#messaging#encryption#systemdesign#infrasketch
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PhizChatMay 25, 2026 • 4 min read
Synthetic Identity Fraud: How It Works and How to Protect Yourself
Synthetic identity fraud combines real and fake data to create new identities. Learn how this $35 bi...
#security#privacy#messaging#encryption
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PhizChatMay 21, 2026 • 2 min read
PhizChat: The Brazilian Messaging App That Puts Your Data Where It Belongs
Meet PhizChat: the Brazilian messaging app with mandatory encryption, identity verification, and dat...
#security#privacy#messaging#brazil
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Matt FrankMay 23, 2026 • 3 min read
Day 46: Email Client Backend - AI System Design in Seconds
Building a robust email backend is deceptively complex. You're not just moving messages from...
#messaging#encryption#systemdesign#infrasketch
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Matt FrankMay 22, 2026 • 3 min read
Day 46: Email Client Backend - AI System Design in Seconds
Building a robust email backend is deceptively complex. You're juggling real-time message...
#messaging#encryption#systemdesign#infrasketch
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Matt FrankMay 22, 2026 • 3 min read
Day 45: Discord Voice Channels - AI System Design in Seconds
Building a real-time voice system that scales to hundreds of concurrent users is one of the...
#messaging#encryption#systemdesign#infrasketch
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Matt FrankMay 20, 2026 • 3 min read
Day 43: WhatsApp Messaging - AI System Design in Seconds
Building WhatsApp's Architecture: Balancing Security, Scale, and Real-Time...
#messaging#encryption#systemdesign#infrasketch
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Matt FrankMay 23, 2026 • 3 min read
Day 47: Video Calling Platform - AI System Design in Seconds
Building a video calling platform that reliably connects millions of users across varying...
#messaging#encryption#systemdesign#infrasketch
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Matt FrankMay 24, 2026 • 3 min read
Day 48: Forum & Q&A Platform - AI System Design in Seconds
Building a Q&A platform that scales requires more than just storing questions and...
#messaging#encryption#systemdesign#infrasketch
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Matt FrankMay 25, 2026 • 3 min read
Day 49: In-App Chat SDK - AI System Design in Seconds
Building a chat SDK that works seamlessly across apps sounds simple until you realize it...
#messaging#encryption#systemdesign#infrasketch
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Matt FrankMay 21, 2026 • 3 min read
Day 44: Slack Workspace - AI System Design in Seconds
Building a communication platform that serves thousands of teams, each with their own...
#messaging#encryption#systemdesign#infrasketch
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Matt FrankMay 24, 2026 • 3 min read
Day 47: Video Calling Platform - AI System Design in Seconds
Building a reliable video calling platform is one of the toughest challenges in distributed...
#messaging#encryption#systemdesign#infrasketch
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Matt FrankMay 25, 2026 • 3 min read
Day 48: Forum & Q&A Platform - AI System Design in Seconds
Building a thriving Q&A community requires more than just storing questions and answers....
#messaging#encryption#systemdesign#infrasketch
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Matt FrankMay 21, 2026 • 3 min read
Day 45: Discord Voice Channels - AI System Design in Seconds
Discord serves billions of messages daily, but voice channels present a fundamentally...
#messaging#encryption#systemdesign#infrasketch
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