Technology Stack

GSign платформын технологийн стек.

Backend (Go)

Technology	Version	Purpose
Go (Golang)	1.21+	Main backend language
Fiber v2	Latest	High-performance web framework
PostgreSQL	16	Primary database (pgx driver)
MongoDB	7	Document storage, audit logs
Redis	7	Caching, sessions, queues
Asynq	Latest	Distributed task queue
AWS S3	-	Document storage (aws-sdk-go-v2)

Go Libraries

// Web Framework
github.com/gofiber/fiber/v2

// Database
github.com/jackc/pgx/v5           // PostgreSQL
go.mongodb.org/mongo-driver       // MongoDB

// Authentication
github.com/golang-jwt/jwt/v5      // JWT
golang.org/x/crypto/bcrypt        // Password hashing

// PKI & Crypto
crypto/x509                       // X.509 certificates
github.com/digitorus/pkcs7        // PKCS#7 signatures
github.com/pdfcpu/pdfcpu          // PDF manipulation

// Task Queue
github.com/hibiken/asynq          // Background jobs

// Logging
github.com/rs/zerolog             // Structured logging

Frontend (Next.js)

Technology	Version	Purpose
Next.js	14+	React framework (App Router)
TypeScript	5.x	Type safety
Tailwind CSS	3.x	Utility-first styling
Shadcn/ui	Latest	Component library
Zustand	Latest	State management
TanStack Query	v5	Data fetching & caching
React PDF	Latest	PDF document viewer
React Signature Canvas	Latest	Signature capture

Frontend Structure

gsign-frontend/
├── src/
│   ├── app/                 # Next.js App Router
│   │   ├── (auth)/          # Auth routes
│   │   ├── (dashboard)/     # Dashboard routes
│   │   └── api/             # API routes
│   ├── components/          # React components
│   │   ├── ui/              # Shadcn/ui components
│   │   └── ...
│   ├── lib/                 # Utilities
│   ├── hooks/               # Custom hooks
│   ├── stores/              # Zustand stores
│   └── types/               # TypeScript types
├── public/                  # Static assets
├── tailwind.config.ts
└── next.config.mjs

Infrastructure

Service	Technology	Purpose
Container Runtime	Docker	Application containers
Orchestration	Docker Compose	Container orchestration
Reverse Proxy	NGINX	Load balancing, SSL
CI/CD	GitLab CI	Build, test, deploy
Monitoring	Prometheus + Grafana	Metrics & dashboards
Logging	Loki + Promtail	Log aggregation
SSL	Let's Encrypt	HTTPS certificates

Database Schema

PostgreSQL Tables

-- Core tables
users, organizations, teams
documents, envelopes, recipients
signatures, signature_fields
templates, template_fields
certificates, certificate_operations
audit_logs, webhook_events
api_keys, oauth_tokens
subscriptions, usage_records

MongoDB Collections

// Document metadata
documents
audit_events
webhook_deliveries

Redis Keys

session:{id}              # User sessions
cache:user:{id}           # User cache
queue:email               # Email queue
rate_limit:{ip}           # Rate limiting

Security Stack

Feature	Implementation
Authentication	JWT with refresh tokens
Password Hashing	bcrypt
API Auth	API keys + OAuth 2.0
Rate Limiting	Fiber limiter middleware
HTTPS	Let's Encrypt + NGINX
Headers	Fiber security middleware
PKI	X.509 certificates, PKCS#7

Version History

v1.0 → v1.1 Changes

Component	Before	After
Backend	Node.js + Express	Go + Fiber v2
Frontend	React	Next.js 14+
Styling	Material-UI	Tailwind CSS + Shadcn/ui
Testing	Jest	Vitest (frontend), Go testing (backend)
Task Queue	Bull (Redis)	Asynq (Go-native)
Logging	Winston	zerolog