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Payra

Blog

Development updates, deep technical dives, and security bulletins from the PayraLab team.

Announcement5 min read

Introducing Payra: Private Messaging for Everyone

Today we're launching Payra — a privacy-first messaging platform built on Signal Protocol with a custom Rust backend. Here's what makes it different.

March 10, 2026Read Article
Technical12 min read

PayraProto: Why We Built Our Own Binary Protocol

A deep dive into PayraProto — our custom binary framing protocol that sits on top of WebSockets and drives sub-50ms message delivery at scale.

March 5, 2026

Technical15 min read

Building a 50K WebSocket Server in Rust with Axum

How we architect Payra's real-time gateway in Rust to handle 50,000+ concurrent WebSocket connections on a single server instance with just 20MB RAM.

February 28, 2026

Security8 min read

Designing End-to-End Encrypted Cloud Backups

The cryptographic design behind Payra's cloud backup system. How we ensure your backup provider — including us — cannot read your messages.

February 15, 2026

Technical10 min read

Offline-First Architecture: CRDT Sync for Messaging

Why we chose a CRDT-based approach for offline message queueing and how it handles conflict resolution when devices reconnect.

February 1, 2026

Development7 min read

True Cross-Platform Parity with Flutter

How Payra achieves full feature parity across Android, iOS, macOS, Windows, Linux, and Web from a single Flutter codebase — with zero compromises.

January 20, 2026

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