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Case study

PushMaster: enterprise-grade push notification server

PushMaster is an enterprise-grade push notification server for reliable, multi-channel message delivery across web and mobile.

Tech stack
Java, HTTP/2, Kubernetes, Kafka, RabbitMQ, REST API.
Timeline
6 months
OutcomeWhat the work delivered
Dynamic
load management under spikes
Native + flexible
integration methods
Enterprise-grade
push delivery
The challengeThe brief, and what was at stake

Businesses across industries rely on real-time, reliable push notifications to engage and retain users, streamline operations, and manage critical workflows.

PushMaster is an enterprise-grade push notification server designed for seamless, multi-channel message delivery across web and mobile platforms. Built on a lightweight, microservice-based Java stack, it leverages HTTP/2 Server Push protocols for optimal performance.

Key Benefits:Accelerates time-to-market with pre-built, proven delivery mechanisms.Mitigates risks through robust error-handling and reliable delivery.Reduces total cost of ownership (TCO) by eliminating costs for unused infrastructure or SaaS overhead.

Notifications at scalePush infrastructure buckling under load?

An enterprise-grade notification server with dynamic load management and flexible integration.

How we built itWhat WislaCode designed and shipped
01Native integration

Supports APNs (iOS), FCM (Android + Web), and Huawei Push Kit.

Multi-device support with integrated user-device mapping:

• Manages multiple devices per user.

• Tracks active and inactive devices automatically.

• Provides delivery confirmation via app callbacks, enabling business-critical workflows and backup channel triggering (e.g., SMS, email).

PushMaster Native Integration
02Flexible integration methods

• REST API for straightforward integration with client systems.

• Asynchronous messaging via Kafka or RabbitMQ for enhanced flexibility.

• Seamless integration with customer BI tools or workflow systems.

PushMaster Flexible Integration Methods
03Dynamic load management

• Asynchronous interface ensures high throughput during peak loads.

• Built-in parallelisation of outbound requests optimises queue management.

• Horizontal scaling on Kubernetes ensures fast adaptation to increased load while keeping minimal infrastructure footprint for low load.

• Automatic platform and device detection with streamlined message routing and formatting.

PushMaster Dynamic Load Management
04Designed for seamless integration

• Embeds effortlessly into the client’s infrastructure without vendor lock-in.

• Avoids proprietary dashboards, allowing data streams to integrate with existing reporting systems.

PushMaster Designed for Seamless Integration
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