Tech insights & practical experience

We share knowledge from real projects, technical deep-dives, and insights about the Slovak tech scene. Articles from our team and industry guests.

Latest articles

AWS migration case study for banking systems
15. marec 2024 • Martin Kováč • 8 min read

How we migrated a banking system to AWS without downtime

Deep dive into a 6-month migration of Tatra Banka's core banking system to AWS cloud. Strategy, challenges, lessons learned, and measurable results. All with concrete metrics.

Article preview

Key topics covered:
  • Pre-migration assessment and risk analysis
  • Phased migration strategy with blue-green deployment
  • Data synchronization challenges and solutions
  • Regulatory compliance in a cloud environment
  • Performance optimization post-migration
  • Cost analysis - actual savings achieved

Key metrics: 99.99% uptime maintained, 40% cost reduction, 3x faster deployment cycles

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Common security vulnerabilities in Slovak e-commerce
8. marec 2024 • Jana Horváthová • 6 min read

Top 5 security mistakes in Slovak e-commerce solutions

Security audit insights from 50+ Slovak e-commerce projects. Real examples of vulnerabilities, exploitation scenarios, and practical fixes for developers.

Security audit findings

Najčastejšie vulnerability types:
  • SQL Injection (85% sites) - Payment processing forms
  • XSS (78% sites) - Product reviews a user comments
  • Insecure APIs (65% sites) - Mobile app backends
  • Weak authentication (72% sites) - Admin panels
  • GDPR violations (90% sites) - Customer data handling

Impact: Average cost of security breach: 85,000 €

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Kubernetes infrastructure for small businesses
1. marec 2024 • Peter Novotný • 10 min read

Prečo je Kubernetes pre malú firmu zbytočný (a kedy ho naozaj potrebujete)

Practical guide pre decision-making o container orchestration. Real-world scenarios, cost-benefit analysis a alternatives pre different business sizes and use cases.

Decision framework

Kedy Kubernetes NIE je riešenie:
  • Máte < 10 microservices
  • Aplikácia beží na 1-2 serveroch
  • Tím má < 5 developers
  • Deployment frequency < 1x týždenne
Kedy Kubernetes dáva zmysel:
  • 20+ microservices s complex dependencies
  • Multi-region deployments required
  • Auto-scaling based on traffic
  • Dedicated DevOps engineer available
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React Native vs native app development comparison
22. február 2024 • Jana Horváthová • 7 min read

React Native vs Native - Rozhodovanie pre slovenské fintech

Porovnanie development approaches na base reálnych fintech projektov. Performance metrics, development costs, user experience a maintenance considerations.

Comparison metrics

Factor React Native Native
Development time 4-6 mesiacov 8-12 mesiacov
Performance 90-95% native 100%
Maintenance cost 40% lower Higher
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GraphQL API implementation best practices
14. február 2024 • Martin Kováč • 9 min read

GraphQL v production - lessons learned z ESET projektu

Practical implementation guide pre GraphQL API v enterprise prostredí. Schema design, performance optimization, caching strategies a security considerations.

Implementation details

Architecture decisions:
  • Schema-first approach s code generation
  • Apollo Server s Express.js backend
  • DataLoader pre n+1 query problem
  • Redis caching na resolver level
  • Rate limiting a query complexity analysis
Performance results:
  • 60% reduction v network requests
  • Average response time: 120ms
  • Mobile app data usage -45%
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Remote team collaboration tools and practices
7. február 2024 • Peter Novotný • 5 min read

Remote-first development team - tools a workflows, ktoré fungujú

Praktické tips pre remote software development teams. Communication tools, development workflows, code review process a team building activities, které sme otestovali.

Our remote stack

Communication & collaboration:
  • Slack - daily communication, organized channels
  • Zoom - video calls, pair programming sessions
  • Notion - documentation, project management
  • Figma - design collaboration a reviews
Development workflow:
  • GitHub flow s mandatory code reviews
  • Daily standup meetings (15 min max)
  • Weekly retrospectives a planning
  • Async-first communication preference
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    Tools & workflows - productivity tips pre developers
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