About the Client
A multinational financial services company serving millions of customers across diverse markets. With a focus on real-time financial operations, compliance, and customer engagement, the client handles vast volumes of KYC and transactional data daily.
Business Impact
The client aimed to enhance operational efficiency, enable real-time updates for users, and fortify their data management and security systems. The stakes were high: delays in event processing or missed notifications could directly impact user trust and regulatory compliance.
The Challenge
“We needed to process hundreds of thousands of records and events each day, without delays or missed notifications—speed, accuracy, and security were non-negotiable.”
— VP of Engineering, Client Company
The client’s legacy infrastructure struggled to keep up with daily data and event processing demands. Notifications were delayed, search functionalities were slow, and scalability concerns hindered responsiveness.
Our Approach
We engineered a high-performance, event-driven architecture to meet the demands of modern financial services. Key priorities included high-throughput data ingestion, reliable multi-channel notifications, sub-second search speeds, and enterprise-grade security protocols.
Why Kafka, Redis & Elasticsearch?
- Apache Kafka enabled distributed, scalable ingestion and event processing of large volumes of daily data.
- Redis provided ultra-fast caching for real-time stock-related data rendering.
- Elasticsearch transformed legacy Excel-based search into lightning-fast, scalable querying capabilities.
- Twilio, WhatsApp, and Firebase ensured real-time, multi-channel client communication.
Key Initiatives
- Kafka Topic Partitioning: Handled 4–5 lakh KYC and transaction records daily.
- Java ExecutorService: Processed 40k–50k concurrent events through optimized threading.
- Integrated Notification System: Delivered 25–30 event-based alerts via SMS, WhatsApp, and app notifications.
- Search Optimization: Migrated ~20k stock records from Excel to Elasticsearch.
- Real-Time Caching: Implemented Redis for instant data retrieval.
- Security Enhancements: Adopted encryption and secure authentication mechanisms for data compliance.
The Solution
The solution was architected as a microservices-based, event-driven platform using Java (Spring Boot) and Apache Kafka for core data ingestion. Redis was introduced for low-latency access to frequently queried stock data, while Elasticsearch replaced static Excel files for dynamic and fast querying. Notifications were streamlined across SMS, WhatsApp, and in-app channels, supported by robust APIs and schedulers.
Features Delivered
- Scalable event-driven backend architecture
- Kafka-powered high-throughput data ingestion
- 95% accurate, multi-channel notification delivery system
- Real-time data caching with Redis
- Sub-second search performance with Elasticsearch
- End-to-end encryption and secure login protocols
- Automated threading for high-frequency event processing
The Results
| Metric | Before | After | Improvement |
| Daily Data Processing | Manual, error-prone, limited scale | 4.5+ lakh records, automated | 10x scale with zero downtime |
| Event Handling | Delays in multi-threaded processing | 50k+ events/day with smooth threading | Real-time responsiveness |
| Notification Delivery | Inconsistent, delayed | 95%+ accuracy via SMS, WhatsApp, app | Improved customer engagement |
| Search Performance | ~10 seconds per query | <1 second via Elasticsearch | 90% faster search response time |
| User Satisfaction | Frustrated with delays | Seamless, real-time interactions | Significantly enhanced experience |
| Data Security | Basic protections | Encrypted data and secure auth | Fully compliant, secure framework |
Client Testimonial
“The transformation was seamless. Our operations now run faster, notifications are timely, and we’ve significantly improved our customer experience and compliance posture.”
— Chief Technology Officer, Client Company
Conclusion
By embracing a scalable, event-driven architecture built on cutting-edge technologies, the client transformed its data processing and notification systems. The result: improved performance, enhanced user engagement, and a platform built for future growth in a competitive and compliance-driven industry.
