Whisper

How to build a unified omnichannel messaging strategy across push, SMS, email, and in-app channels — covering channel selection, message consistency, and unified customer experience.

How real-time notifications transform the banking experience, covering transaction alerts, security notifications, compliance requirements, and the business impact of instant communication.

Strategies for scaling notification systems to millions of users, covering horizontal scaling, fan-out patterns, rate limiting, and infrastructure design — with patterns from Whisper.

Strategies for reducing notification fatigue in mobile apps, covering frequency capping, smart scheduling, user preference management, and content relevance optimization.

A comparison of real-time event delivery mechanisms including WebSockets, Server-Sent Events, and long polling, with implementation examples and guidance on choosing the right approach.

How to build a notification templating engine with dynamic content, internationalization, personalization, and template versioning — with patterns from Whisper.

How to build reliable push notification infrastructure with APNs and FCM integration, device token management, delivery tracking, and retry strategies — with patterns from Whisper.

How to design message queues for notification systems covering priority queues, dead letter queues, retry logic, and backpressure handling — with patterns from Whisper.

How to design a WebSocket architecture for real-time messaging systems, covering connection management, heartbeat patterns, reconnection strategies, and scaling considerations used in Whisper.

How to measure notification effectiveness through open rates, click-through rates, and user engagement analytics — with frameworks for optimizing notification strategy in fintech.