Anik Sikder
Architecture Knowledge Base

Architecture &System Design

Production-grade architecture blueprints, scalability strategies, security patterns, and engineering decisions used in modern SaaS, cloud-native, and distributed systems.

Multi-TenantRBACIAMCloudDistributed SystemsScalability
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Production Blueprints
SaaS
Business Systems
Security
IAM & RBAC
Scale
Cloud & Distributed
Top Featured Blueprint

Scalable System Design

17 min readAug 2026

Applying clean architecture, service boundaries, and domain-driven principles to support long-term growth.

ArchitectureSystem DesignDDDClean ArchitectureScalability
Blueprint-Preview.md
01Clean Architecture
02Domain-Driven Design
03Service Layer Pattern
04Business Workflow Orchestration
05Maintainable Codebases

Production-grade architecture guide

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Blueprints

Architecture Library

Deep technical breakdowns covering SaaS, security, identity, cloud infrastructure, distributed systems, and large-scale backend design.

Multi-Tenant SaaS Architecture

Designing tenant-aware platforms with strong data isolation, scalability, and shared infrastructure efficiency.

01Schema-per-tenant isolation
02Tenant-aware request routing
03Shared infrastructure model
04Secure data segregation
05Subscription-driven tenancy

Identity & Access Management

Implementing secure authentication, authorization, and access control across complex business systems.

01JWT authentication
02Refresh token rotation
03Session security
04Permission enforcement
05Token revocation

Cloud & Distributed Systems

Building event-driven services, background processing pipelines, and production-ready operational workflows.

01Event-driven architecture
02Async task processing
03Redis & caching
04Background workers
05Observability & monitoring

Authorization & RBAC

Designing role-based access systems with hierarchical permissions and organization-aware security models.

01Hierarchical roles
02Permission inheritance
03Object-level authorization
04Multi-role support
05Fine-grained policies

API & Backend Engineering

Building reliable APIs with clean contracts, versioning strategies, security controls, and long-term maintainability.

01RESTful API design
02Versioned endpoints
03Rate limiting & throttling
04OpenAPI documentation
05Pagination & filtering

TalentFlow HCM (Human Capital Management Platform)

Enterprise-grade human capital management platform designed to unify employee lifecycle management, payroll operations, recruitment workflows, attendance tracking, performance management, and workforce analytics within a secure multi-tenant architecture.

01WebSocket-first real-time communication
02Versioned contracts and acceptance workflows
03Double-entry escrow and wallet ledger
04Atomic milestone state transitions
05Transactional outbox and idempotent events
06Dispute-driven fund freezing
07CQRS read models for messaging and transactions

FinCore Treasury (Financial Operations & Treasury Platform)

Architecture blueprint for a multi-tenant treasury platform covering bank connectivity, cash management, payment orchestration, reconciliation, approval governance, immutable financial accounting, and event-driven financial operations.

01Multi-bank cash visibility
02Event-driven payment orchestration
03Automated reconciliation engine
04Tiered approval governance
05Immutable financial ledger

AccessCore IAM (Enterprise Identity & Access Management Platform)

Enterprise-grade identity and access management platform designed to centralize authentication, authorization, user lifecycle management, RBAC governance, and organizational security controls.

01Multi-tenant identity core
02Hierarchical RBAC engine
03SSO & token architecture
04Audit-ready security logging
05Delegated administration model

Nexus SCM (Supply Chain & Warehouse Management Platform)

Enterprise-grade supply chain management platform designed to unify procurement, warehouse operations, inventory control, distribution, supplier collaboration, and logistics workflows through a ledger-first, event-driven, multi-tenant architecture.

01Ledger-first inventory architecture
02Warehouse-scoped stock ownership
03Transactional outbox for reliable event publishing
04Event-driven warehouse workflows
05CQRS read models for operational analytics
06Idempotent distributed event processing
07Multi-echelon inventory visibility
08Automated replenishment and forecasting