Brief
ENGINEERING & FINTECH DIGESTOur monthly technical digest on multi-tenant payment gateways, API relay meshes, and sovereign cloud architecture.
Unified Multi-Tenant Payment Gateway & Distributed Relay Architecture
How Zetameld enables enterprises to connect multiple Razorpay and Cashfree accounts under a single high-availability API, achieving 99.99% payment success rates with automated smart-routing and wire-speed cryptographic boundary validation.
Centralized Payment Mesh for Razorpay & Cashfree
Zero Vendor Lock-in • Multi-Tenant Gateway Relay • Production & Sandbox Isolation
Razorpay & Cashfree Relay
Connect multiple gateway accounts per tenant with centralized API keys and automated webhooks.
Wire-Speed API Relay
Strict boundary isolation across 14 microservices with Redis idempotency and zero database coupling.
Self-Hosted SDKs & CLI
Universal SDKs for Node.js, Python, Go, and TypeScript with built-in HMAC verification.
What you will find in each issue
Product Announcements
First-look access to newly released microservices, apps, and SDK features.
Architecture Deep-Dives
Engineering notes on zero-trust mTLS, high-availability caching, and database isolation.
Customer Blueprints
Real-world migration case studies from high-growth startups and global enterprises.
Executive Insights
Thought leadership essays on tech sovereignty, zero vendor lock-in, and fair pricing.
Previous Issues Archive
Explore past editions covering microservice security, payment idempotency, sovereign SaaS architecture, and product updates.
Zero-Trust Microservice Mesh: API Relay, Sharded Databases & Merkle Ledger Audit
An architect’s playbook on deploying 21 decoupled node microservices, envelope encryption, and real-time Merkle audit logs without cross-service database coupling.
Rohan Deshmukh
Lead Platform Architect
Architecting High-Concurrence School ERP: Multi-Tenant Academics & Fee Invoicing
Isolating student SIS records, automated payment reconciliation across UPI, Cashfree & Razorpay, and fault-tolerant biometric attendance across thousands of campuses.
The Wait is Over: Zetameld Tables is Now Available in Zetameld One
Collaborate on structured relational data with spreadsheet simplicity and enterprise database power directly inside the Zetameld One workspace.
Zero-Error Automated Payroll & Statutory Compliance in Sovereign Cloud SaaS
Eliminate manual payroll calculation errors, enforce dynamic tax deductions, and automate instant bank disbursals with double-entry cryptographic audit trails.
Vikramaditya Rao
Head of Financial Engineering
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