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TECHNICAL WHITEPAPERS • SYSTEM DESIGN • 08 PUBLICATIONS

Engineering InsightsSystem Design & Architecture.

Technical whitepapers, distributed systems design patterns, and high-concurrency production notes authored by OHO TECH engineers and leadership.

Technical Whitepapers

In-depth distributed systems notes

Architectural Domains

From FinTech ledgers to Healthcare EMR

100%

Code Invariants

Strict ACID & mathematical balance

Marketing Hype

Peer-reviewed engineering blueprints

Showing8of 8 Whitepapers

FEATURED TECHNICAL WHITEPAPER

ARTICLE 01 // Distributed Systems & FinTech

6 min readSeptember 2026

TRANSACTION INTEGRITY AT SCALE

Designing High-Throughput Double-Entry Financial Ledgers with Strict ACID Guarantees

How to build mathematically balanced, immutable double-entry financial transaction engines that withstand network partitioning, prevent race conditions, and achieve sub-millisecond execution.

#Distributed Systems#Double-Entry Accounting#PostgreSQL#Go (Golang)#ACID#Event Sourcing

Himansu Nayak (MCA)

Head of Technology & Systems Architecture, OHO TECH

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ALL SYSTEM ARCHITECTURE PUBLICATIONS

Enterprise AI & Automation7 min read

ACCURACY & DATA SOVEREIGNTY FOR HIGH-VOLUME KYC & INVOICING

Building Hallucination-Free Document OCR & Verification Pipelines with Self-Hosted Models

How OHO TECH designs sovereign AI pipelines that extract structured data from identity documents and GST tax invoices in under 4.2 seconds with strict deterministic validation schemas and zero external data leaks.

#AI Integration#Document OCR#PyTorch

Himansu Nayak (MCA)

Read Note

Healthcare Engineering & Cloud7 min read

HIPAA & NABH COMPLIANT ROW-LEVEL SECURITY & ENCRYPTED ISOLATION

Architecting Zero-Leakage Multi-Tenant Hospital & Clinical Clouds

A deep-dive blueprint for multi-hospital cloud SaaS architectures that combine database partition isolation, role-based cryptography, and sub-second OPD triage.

#Healthcare EMR#PostgreSQL RLS#HIPAA Compliance

Japabandhu Kampa

Read Note

Edge Computing & Retail5 min read

ZERO-LATENCY COUNTER BILLING & INVENTORY CONVERGENCE

Offline-First State Synchronization for Multi-Location Retail Depots

Designing offline-capable desktop POS billing terminals that maintain 100% operational continuity during network outages and synchronize seamlessly without race conditions upon reconnection.

#Edge Computing#Retail POS#SQLite

Himansu Nayak (MCA)

Read Note

Enterprise Modernization6 min read

ZERO-DOWNTIME LEGACY MODERNIZATION WITHOUT CODE DISRUPTIONS

Migrating High-Risk Enterprise Monoliths Using the Incremental Strangler Fig Pattern

How to incrementally replace decades-old monolithic ERP systems with modern microservices, Next.js frontends, and automated CDC data replication without risking business downtime.

#Digital Transformation#Strangler Fig#Change Data Capture

Japabandhu Kampa

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Cloud Scaling & Edge Architecture6 min read

EDGE CACHING & DYNAMIC READ REPLICAS

Scaling Campus ERP to 100,000 Concurrent Student Sessions During Exam Result Release

How OHO TECH architected a high-concurrency educational results pipeline utilizing edge-computed HTML streams, Redis cache tiers, and serverless background PDF compilers.

#Next.js 16#Edge CDN#Redis

OHO TECH Engineering Team

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Backend Systems & Microservices5 min read

ASYNC MESSAGE PASSING FOR ENTERPRISE SOFTWARE

Sub-15ms Event Pipelines with Go, Redis Streams and gRPC

Practical patterns for structuring modular Go microservices communicating over protobuf schemas and asynchronous message streams with zero single-point-of-failure.

#Go (Golang)#gRPC#Protocol Buffers

Himansu Nayak (MCA)

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Engineering Roadmap & Policy4 min read

100% CODE HANDOVER, MODULAR ECOSYSTEMS & PRIVACY-FIRST RUNTIMES

OHO TECH 2026 Architecture Manifesto: Why Digital Sovereignty Is the Only Sustainable Enterprise Model

Our foundational commitment to client intellectual property ownership, vendor-neutral cloud deployments, and battle-tested vertical platforms engineered for long-term independence.

#Company Updates#Code Sovereignty#Open Architecture

Japabandhu Kampa

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SYSTEM ARCHITECTURE ADVISORY

Discuss your technical architecture with our engineers

We collaborate directly with enterprise engineering teams to review database schemas, API topologies, and latency budgets.

START ARCHITECTURE TALK BOOK DEMO

OHO TECH•LOADING

PREPARING CLIENT APPLICATION

Engineering InsightsSystem Design & Architecture.

Technical whitepapers, distributed systems design patterns, and high-concurrency production notes authored by OHO TECH engineers and leadership.

Technical Whitepapers

In-depth distributed systems notes

Architectural Domains

From FinTech ledgers to Healthcare EMR

100%

Code Invariants

Strict ACID & mathematical balance

Marketing Hype

Peer-reviewed engineering blueprints

Designing High-Throughput Double-Entry Financial Ledgers with Strict ACID Guarantees

How to build mathematically balanced, immutable double-entry financial transaction engines that withstand network partitioning, prevent race conditions, and achieve sub-millisecond execution.

#Distributed Systems#Double-Entry Accounting#PostgreSQL#Go (Golang)#ACID#Event Sourcing

Himansu Nayak (MCA)

Head of Technology & Systems Architecture, OHO TECH

Read Full Whitepaper