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When you build backends for dozens of startups, patterns emerge—not just in code, but in what actually works at scale, under pressure, and with small teams.
At TLVTech, we’ve refined a set of backend design patterns we use across most projects—regardless of stack, industry, or company size. These patterns help us deliver faster, onboard developers quickly, and avoid messy rewrites later on.
Here’s what we use, and why it works.
We don’t start with microservices. We start with a modular monolith.
Why:
Once there’s real scale or organizational need, we extract services with clear boundaries. Premature microservices = wasted time and complexity.
We keep backend layers clean and predictable:
Why:
This structure works across NestJS, Express, Django, Spring—doesn’t matter. Clean separation always wins.
We use Data Transfer Objects (DTOs) to define inputs and outputs between layers.
Why:
Especially useful in TypeScript and Python with tools like class-validator or Pydantic.
We use async event patterns (pub/sub or message queues) selectively—mainly for:
Why:
We prefer lightweight solutions like Redis streams or AWS SNS/SQS before going full Kafka.
Every project has:
Why:
Observability starts with consistent logging.
We don’t rely on magic. We centralize config using .env files, secrets managers, or config services—so nothing is hardcoded.
Why:
Backend systems don’t win because they’re clever. They win because they’re predictable, understandable, and built to grow.
The design patterns we use are boring on purpose—because boring is what makes products stable, scalable, and easy to maintain.
If you’re building something and want backend that won’t crumble under growth, let’s talk.
- Adaptive software development (ASD) is a flexible method of building software, allowing for changes during the development process. - ASD is based on three key ideas: 'Speculation', 'Collaboration', and 'Learning'. - The Adaptive Software Development Process Model involves three fluid, continuously cycled stages: Speculation (planning with an open mind), Collaboration (effective teamwork and client engagement), and Learning (reflecting on results). - ASD's key strength is its adaptability; it serves user-focused development as it involves user feedback significantly. However, the lack of a fixed plan and potential user feedback's unreliability could lead to chaos and misguided development. - Adaptive software development finds application in dynamic, high-flex projects that require frequent developments and adjustments, as epitomized in the development of ride-sharing apps. - ASD compared to other models like Scrum and Agile is characterized by more flexibility and constant adaptation, while others might have more structured, fixed roles, or designs.
A fast backend is key to great UX. In this post, we share practical techniques we use at TLVTech to reduce latency, improve performance, and keep users moving smoothly.
- Web application security is crucial for longevity and user safety; without it, your application is susceptible to data breaches and cyber threats. - The Open Web Application Security Project (OWASP) is a key tool in web application security, assisting businesses in understanding and addressing vulnerabilities. - Consequences of inadequate security include loss of revenue, reputation, customer trust, and potential legal penalties. - Tools commonly used to improve web application security include firewalls and antivirus solutions, alongside platforms like TryHackMe for cybersecurity skill development. - A reliable web app security plan should include regular security audits, strong passwords, up-to-date software, and data encryption. - Implementing OWASP guidelines for web app protection starts with understanding OWASP principles, targeting app vulnerability points, and regular updates on OWASP standards. - A web application firewall, analogous to a castle gate, forms a barrier against harmful data and should be regularly updated to match evolving cyber threats.
