Viprasol Blog
Expert insights on trading, development, and technology. Learn from our team of fintech professionals.
Articles (1514)
🚀SaaS & StartupsSaaS Revenue Recognition: MRR, ARR, Deferred Revenue
Build accurate SaaS revenue metrics: calculate MRR and ARR correctly across plan changes, account for deferred revenue on annual prepayments, measure net revenue retention, and implement ASC 606 compliant revenue recognition in PostgreSQL.
🌐Web DevelopmentBackground Jobs Architecture: BullMQ, Retries, Dead Letter Queues
Build a production background job system with BullMQ: configure job queues, implement exponential backoff retries, route failed jobs to dead letter queues, tune worker concurrency, and monitor queue health with Prometheus.
🌐Web DevelopmentAPI Documentation with OpenAPI 3.1: TypeSpec, Spec Generation
Build production API documentation with OpenAPI 3.1: generate specs from TypeScript code with Zod, author with Microsoft TypeSpec, serve with Scalar or Swagger UI, and integrate docs into your CI/CD pipeline as a first-class artifact.
🌐Web DevelopmentNext.js Caching Strategies: Data Cache, Full Route Cache, Router Cache
Master Next.js App Router caching: understand the four cache layers (Request Memoization, Data Cache, Full Route Cache, Router Cache), configure revalidation strategies, and implement on-demand cache invalidation with tags.
☁️Cloud & DevOpsKubernetes Cost Optimization: VPA, HPA, Bin-Packing, Spot Nodes
Cut Kubernetes costs by 40–60%: configure Vertical Pod Autoscaler for right-sizing, Horizontal Pod Autoscaler for traffic-based scaling, bin-packing with pod topology, spot node groups with Karpenter, and idle resource cleanup.
🚀SaaS & StartupsSaaS Analytics Architecture: Clickstream, Cohort Analysis
Build a production SaaS analytics stack: implement clickstream collection with event schemas, design cohort retention tables in PostgreSQL or BigQuery, build funnel analysis queries, and deliver self-serve BI dashboards.
🌐Web DevelopmentTypeScript Decorators: TC39 Stage 3, Class Field Decorators
Master TypeScript decorators with TC39 Stage 3 semantics: implement class, method, accessor, and field decorators, use metadata reflection for dependency injection, and understand NestJS decorator internals.
💼Business TipsOn-Call Culture: Rotations, Alert Fatigue, Runbook Hygiene
Build a sustainable on-call culture: design fair rotation schedules, reduce alert fatigue with signal-to-noise tuning, maintain runbooks that engineers actually use, and run blameless retrospectives that produce real change.
🌐Web DevelopmentReact Server Actions: Form Handling, Optimistic UI
Master React Server Actions in Next.js: handle forms without API routes, implement optimistic UI with useOptimistic, add progressive enhancement, validate with Zod, and handle errors correctly.
🚀SaaS & StartupsProduct-Led Growth Engineering: Activation Tracking, Viral Loops
Build PLG product features that drive growth: implement activation tracking with funnel analytics, design viral loops with referral mechanics, and engineer freemium gates that convert without frustrating users.
☁️Cloud & DevOpsWebSocket Scaling: Sticky Sessions, Redis Pub/Sub Fan-Out
Scale WebSocket servers horizontally: implement sticky sessions with nginx, Redis pub/sub fan-out for cross-server message delivery, Socket.io cluster adapter, and connection health monitoring.
🤖AI & Machine LearningLLM Prompt Engineering: System Prompts
Master LLM prompt engineering for production: design effective system prompts, use few-shot examples correctly, implement chain-of-thought reasoning, and get reliable structured JSON output from Claude and GPT-4.
🚀SaaS & StartupsSaaS Internationalization: i18n Architecture, Currency Formatting, RTL
Build production-ready SaaS internationalization: i18n architecture with next-intl, currency and date formatting, RTL layout support, and scalable translation workflows with Crowdin.
🌐Web DevelopmentReact Native Performance: Hermes, FlashList, JS Bundle Optimization
Optimize React Native app performance: enable Hermes engine, replace FlatList with FlashList, reduce JS bundle size, implement efficient image caching, and profile with Flipper and Perfetto.
☁️Cloud & DevOpsPostgreSQL JSONB Patterns: Operators, Indexing
Master PostgreSQL JSONB for production: query operators, GIN index strategies, partial indexes, schema-on-read vs schema-on-write tradeoffs, and JSONB for evolving data models.
☁️Cloud & DevOpsData Pipeline Architecture: Batch vs Streaming
Design production data pipelines: choose between batch and streaming, compare Airflow vs Prefect vs Dagster, implement dbt transformations, and architect a modern data warehouse with medallion layers.
💼Business TipsStartup CTO Checklist: First 90 Days, Tech Stack, Hiring
The practical CTO checklist for startup engineering leaders: first 90-day priorities, tech stack selection framework, early engineering process decisions, and the hiring mistakes to avoid.
🤖AI & Machine LearningAI Model Evaluation: Benchmarking LLMs, Regression Testing
Build rigorous AI model evaluation pipelines: design eval datasets, implement LLM-as-judge scoring, detect regressions on model updates, and track quality metrics over time with production TypeScript examples.
☁️Cloud & DevOpsKubernetes Networking: CNI Plugins
Master Kubernetes networking: choose the right CNI plugin, write NetworkPolicy rules for zero-trust, decide between service mesh and native K8s networking, and configure production ingress with TLS.
🌐Web DevelopmentGraphQL Persisted Queries: APQ, Query Whitelisting, and CDN Caching
Implement GraphQL persisted queries for security and performance: Automatic Persisted Queries (APQ), server-side query whitelisting, Relay compiler integration, and CDN caching of GET requests.
🌐Web DevelopmentTypeScript Generics: Variance, Conditional Types, Template Literals
Master advanced TypeScript generics: covariance and contravariance, conditional types with infer, template literal types, mapped type modifiers, and higher-kinded types patterns.
🚀SaaS & StartupsSaaS Billing Engineering: Metered Usage, Invoice Generation
Build production SaaS billing infrastructure: metered usage tracking, seat-based and usage-based pricing, invoice generation, payment retry logic (dunning), and billing webhook handling.
🌐Web DevelopmentNext.js Performance Optimization 2026: optimizeNext, PPR, Streaming
Optimize Next.js app performance: achieve green Core Web Vitals with Partial Prerendering, React Suspense streaming, image optimization, font loading, and bundle size reduction.
☁️Cloud & DevOpsCloud Cost Engineering: Rightsizing, Reserved Instances, Spot Fleets
Cut AWS cloud costs 40–70% with systematic rightsizing, Compute Savings Plans, Spot Fleet strategies, container cost allocation, and FinOps practices that scale with your organization.
🌐Web DevelopmentReact Native Offline-First Architecture: WatermelonDB, Sync
Build offline-first React Native apps with WatermelonDB, automatic sync pipelines, conflict resolution strategies, and network-aware UX patterns that work without connectivity.
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