ashenscribe

Hi there, I’m Rishabh Saraswat 👋

Cassandra Enhancement Proposal - 59 (In Progress): Implementing in-band connection draining to enable graceful client disconnection during rolling maintenance and reduce ReadTimeouts in multi-node clusters.
Implemented Guardrail for Unprepared Statements: Developed a new Guardrail configuration to detect, warn, or reject queries that bypass the prepared statement cache (cache misses). Impact: Enhances cluster stability and performance by mitigating the overhead caused by ad-hoc query patterns and enforcing client-side best practices. Commit | PR #4596 | CASSANDRA-21139
Security: Resolved TLS 1.3 connectivity issues in cassandra-stress; implemented Perfect Forward Secrecy via updated cipher suites to meet modern encryption standards. Addresses: Commit | PR | CASSANDRA-21007
Memory Optimization (PR Under Review): Eliminated unnecessary String instance creation during MBean registration to reduce memory overhead. Pending Commit | PR#4548 | CASSANDRA-20446
Testing Infrastructure: Engineered a simulation script for “blocked” data scenarios; verified storage utility accuracy for file sizes and date formats, optimizing disk-space diagnostics. Addresses: Commit | PR | CASSANDRA-20448

—

Architecture: Reactive Microservices (Spring WebFlux) with Zero-Trust Security Model across all internal components
Persistence: Custom time-bucketed partitioning strategy in Cassandra for infinite chat history scaling
Security: Implemented mTLS for all service mesh communication and SCRAM-SHA-512 for Kafka authentication
Performance: Redis Cuckoo Filters for O(1) space-efficient data validation; Lua scripting for distributed rate limiting; sub-50ms real-time messaging via WebSockets + FCM
Resilience: Resilience4j circuit breakers and Spring Cloud Gateway for robust fault tolerance
Authentication: Passwordless registration/login with optional SMS/SMTP MFA, JWT tokens with access/refresh rotation
Testing: Full test coverage with JUnit and Testcontainers for integration tests
Data Layer: PostgreSQL, Cassandra, Elasticsearch, and Redis for optimal query and caching performance

Architecture: Event-Driven Microservices using Spring Boot + WebFlux
Pattern: Outbox Pattern + Kafka for reliable eventual consistency across services
Persistence: Polyglot strategy using PostgreSQL (Relational), MongoDB (Product Catalog), Elasticsearch (Search), and Redis (Caching)
Security: Complete authentication, SMS/TOTP-based MFA, and rate limiting
Payments: Integrated Razorpay for payment processing and Twilio for OTP delivery
Communication: gRPC + Eureka for efficient inter-service communication and discovery
Testing: Full test coverage with JUnit and Testcontainers
Performance: Optimized query execution and response times across multiple data stores

📚 Education

National Institute of Technology (NIT) Srinagar
B.Tech in Computer Science & Engineering (August 2024 – Present)