Viprasol Blog
Expert insights on trading, development, and technology. Learn from our team of fintech professionals.
Articles (1514)
🌐Web DevelopmentTypeScript Branded Types: Nominal Typing, Type-Safe IDs
Implement TypeScript branded types for nominal typing: branded primitives for type-safe IDs, currency amounts, and validated strings. Newtype pattern, runtime validation with Zod, and practical production patterns.
☁️Cloud & DevOpsAWS Step Functions 2026: State Machines, Error Handling & Lambda
Build production AWS Step Functions workflows: state machine design, Lambda orchestration, error handling with retry/catch, parallel execution, Map state for batch processing, and Terraform IaC.
🚀SaaS & StartupsSaaS Onboarding Checklist: Interactive UI
Build a SaaS onboarding checklist that drives activation: interactive step UI with progress tracking, server-side completion state, completion rewards with Stripe, and funnel analytics to identify drop-off points.
🌐Web DevelopmentNext.js Image Optimization: next/image, AVIF/WebP, CDN Delivery
Master Next.js image optimization: next/image component, AVIF and WebP formats, blur placeholder generation, responsive sizes configuration, CDN delivery with Cloudflare, and Core Web Vitals impact.
🌐Web DevelopmentPostgreSQL Row-Level Security: Multi-Tenant Isolation
Implement PostgreSQL Row-Level Security for multi-tenant SaaS: RLS policies with session variables, tenant isolation patterns, security-definer functions, and combining RLS with audit logging.
🌐Web DevelopmentReact Native Push Notifications: Expo Notifications
Implement React Native push notifications with Expo Notifications: APNs and FCM setup, deep link handling, local notifications, notification center UI, and server-side push with Expo Push API.
🚀SaaS & StartupsSaaS Referral System: Tracking, Reward Logic, Fraud Prevention
Build a production SaaS referral system: referral link generation, conversion tracking, reward fulfillment with Stripe credits, fraud prevention rules, and referral funnel analytics in TypeScript and PostgreSQL.
☁️Cloud & DevOpsAWS Lambda Layers: Shared Dependencies, Custom Runtimes
Master AWS Lambda Layers: package shared Node.js dependencies as layers, build custom runtimes with bootstrap scripts, version and manage layers with Terraform, and reduce cold start times.
🌐Web DevelopmentGraphQL DataLoader: Batch Loading, Caching
Eliminate GraphQL N+1 queries with DataLoader: batch loading patterns, per-request caching, nested relationship loaders, custom batch functions, and DataLoader with Prisma in production TypeScript.
🚀SaaS & StartupsSaaS Email Sequences: Transactional System, Template Engine, Queuing
Build a production SaaS email infrastructure: transactional email service with React Email templates, BullMQ queue for reliable delivery, drip sequence scheduling, open/click tracking, and unsubscribe handling.
☁️Cloud & DevOpsAWS Aurora 2026: Serverless v2, Replicas, Failover
Production AWS Aurora PostgreSQL setup: Serverless v2 autoscaling, read-replica routing, failover testing and Terraform - copy-paste config and gotchas.
🌐Web DevelopmentReact Context Patterns: Performance, Compound Components
Master React Context patterns: avoid unnecessary re-renders with context splitting, build compound components with implicit context, and know when to reach for Zustand instead of Context for global state.
💰FintechStripe Webhooks 2026: Handling, Signature Verification, Idempotency
Build production-grade Stripe webhook handling: HMAC signature verification, idempotent event processing, retry-safe handlers, event routing architecture, and testing strategies in TypeScript.
☁️Cloud & DevOpsDocker Multi-Stage Builds: Layer Caching, Minimal Images, Distroless
Build minimal, secure Docker images with multi-stage builds: layer caching optimization, distroless base images, BuildKit secret mounts for npm tokens, and production Dockerfiles for Node.js and Go.
🤖AI & Machine LearningOpenAI Function Calling Guide 2026: Build AI Agents with Tool Use
Learn OpenAI function calling step-by-step: define tools, handle multi-step agent loops, structured outputs with JSON Schema, and build production-ready AI agents in TypeScript.
🌐Web DevelopmentPostgreSQL Partitioning 2026: Range, List & Hash + SQL
PostgreSQL table partitioning with SQL examples: range for time-series, list by tenant, hash for distribution, plus pg_partman automation and pitfalls.
🚀SaaS & StartupsSaaS User Permissions: RBAC vs ABAC, Casbin, and OPA Integration
Design production SaaS permission systems: RBAC with role hierarchies, ABAC for attribute-based rules, Casbin policy engine in Node.js, OPA for distributed authorization, and permission UI patterns.
🌐Web DevelopmentReact Query Server State: useQuery Patterns, Optimistic Updates
Master TanStack Query v5: useQuery caching patterns, useMutation with optimistic updates, useInfiniteQuery for infinite scroll, prefetching with Next.js App Router, and query invalidation strategies.
☁️Cloud & DevOpsAPI Gateway Authentication: JWT, API Keys, mTLS, and Kong Patterns
Implement production API gateway authentication: JWT validation at the gateway, API key management with scopes, mutual TLS for service-to-service, and Kong plugin configuration with Terraform.
🚀SaaS & StartupsSaaS Audit Logging: Immutable Audit Trails, Event Sourcing
Build immutable audit logging infrastructure for SaaS: append-only event ledger, tamper detection with HMAC chaining, SOC2 CC7.2 and GDPR Article 30 compliance, and real-time alerting.
🌐Web DevelopmentReact Native Animations: Reanimated 3, Gesture Handler
Master React Native animations with Reanimated 3: worklet-based shared values, gesture handler integration, layout animations, and shared element transitions for iOS and Android.
🌐Web DevelopmentDatabase Schema Versioning
Compare Flyway, Liquibase, and Prisma Migrate for production database schema versioning. Covers branching strategies, zero-downtime migrations, rollback patterns, and CI/CD integration.
🌐Web DevelopmentTypeScript Error Handling: Result Types, neverthrow
Build robust TypeScript error handling with Result types, neverthrow library, discriminated union errors, typed React error boundaries, and structured error propagation patterns for production apps.
☁️Cloud & DevOpsAWS CloudFront at the Edge: CDN Configuration, Lambda@Edge
Master AWS CloudFront: cache policy configuration, origin groups for failover, Lambda@Edge for request manipulation, and field-level encryption — with production Terraform examples.
🌐Web DevelopmentNext.js Testing Strategy: Unit, Integration
Build a comprehensive Next.js testing strategy: unit tests with Vitest, integration tests with MSW for API mocking, and E2E tests with Playwright — including App Router patterns.
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