#microservices

We had 22 microservices and 40 customers. That Was the Problem.

Meera Iyer found out how bad it had gotten during a demo. Her freight-scheduling startup, Kestrel, was 14 months into building a platform…

SIGTERM Doesn’t Mean “Stop”

What we learned rebuilding liveness, readiness and graceful shutdown for a high-throughput payments authorization service

𝗦𝗵𝗮𝗿𝗲𝗱 𝗟𝗶𝗯𝗿𝗮𝗿𝘆 𝗖𝗵𝗮𝗼𝘀 — 𝗗𝗶𝗻𝗴 𝗗𝗼𝗻𝗴! 🔔

Imagine an internal shared library that handles RabbitMQ connections, queues, and consumers for ~50 microservices running in Kubernetes.

Distributed Transactions Without the Pain: SAGA and the Outbox Pattern in Spring Boot

A few years back, I got paged at 2 AM because customers were being charged for orders that didn’t exist. The payment service had done its…

My Confession: I Make Books People Can Finish in One Sitting

Morning: 3 sales.

Microservices Performance Problems: Where Does Your Latency Really Come From?

A practical guide to finding and fixing the bottlenecks that slow down distributed systems

Reasons Synchronous Microservice Chains Fail Harder Than They Look

Production Grade Microservice Deployment — Part 1

I read the infrastructure outline and application requirements slowly 3 times before it started to make any sense.

We Split the Monolith Into Microservices to Move Faster, and Now Loading One Screen Takes Five…

The monolith was slow to work in, so we broke it apart, and we did not get speed, we got a distributed monolith, which is the same tangle…

Wiring It All Together: API Gateway & Service Discovery in Spring Boot Microservices

Introduction

The Unsung Layer: Why the Service Layer Is Still the Most Valuable Thing in Your Stack

Frontend gets the applause. Databases get the respect. The service layer quietly delivers more value than either of them gets credit for

API Gateway Becomes a Bottleneck: System Design Deep Dive on Gateway Scaling, Authentication…

System Design Real Scenarios— A Popular Interview Question That Tests Gateway Architecture, Auth Offloading, Connection Pooling, Rate…

Dead Letter Queues: Handling Poison Messages Gracefully

Some messages will never be processed successfully. The question is whether that kills your queue or gets handled safely.

Microservices Communication: Choosing the Right Pattern for Scalable Systems

As organizations scale their applications, a monolithic architecture often becomes difficult to maintain, deploy, and scale. Microservices…

The Circuit Breaker Pattern: Failing Fast and Failing Safe

One slow dependency can take down your entire system. The circuit breaker pattern stops that from happening.

How .NET Became a Modern Development Platform

Designing a Bank HR Management System: Lessons from a Real-World Enterprise Architecture

How layered architecture, microservices, and security-first design come together to support 16,000+ employees across 2,400 branches.

Monolithic vs Microservices Architecture: Which Is Better?

Monolithic vs Microservices Architecture: Which Is Better?

Agentic Mesh: A Microservice With a Brain

Confluent Developer Podcast featuring Tim Berglund

API Gateway vs BFF: Two Patterns Everyone Confuses

It starts small. You add an API gateway in front of your services, and it does exactly what you hoped: one place for authentication, one…

Uber Surge Pricing During Rain: System Design Deep Dive on Real-Time Demand Supply and Dynamic…

System Design Real Scenarios — A Popular Interview Question That Tests Stream Processing, Real-Time Analytics, Demand vs Supply…

Exchange Data Pipeline: Trade History, Candlestick Generation, and Analytics

Every trade is a data point. Millions of data points per day become the charts, statistics, and reports that traders and regulators rely…

Combining Resilience4j Patterns in Spring Boot

In a previous article, we explored how to use the Circuit Breaker pattern with Resilience4j in a Spring Boot application.

Still Using Netflix Conductor? Here’s Why Teams Are Switching to Unmeshed

Hey fellow engineers! 👋

How We Reduced Kubernetes Resource Usage Through Smarter Resource Tuning

A practical guide to right-sizing requests and tuning CPU and memory limits for JVM workloads

Swiggy Shows Wrong Rider Location: System Design Deep Dive on Real-Time GPS Tracking and Eventual…

System Design Real Scenarios — A Popular Interview Question That Tests Real-Time Streaming, WebSockets, GPS Polling, and Geo-Distributed…

Microservices vs Monolithic Architecture: Understanding the key differences

The principle of Monolithic Architecture is to develop the full application as a single unit or combining all the services within a single…

Resiliency at Chase, Part 3: APIs and Microservices That Refuse to Quit

How We Learned to Stop Worrying and Love the Timeout

Stop Using Microservices for Everything (Your Architecture is Trash)

Are we entirely out of our collective engineering minds today?

Why Workflow Orchestration: The Problem with Ad-Hoc Distributed Coordination

Why home-grown distributed coordination always breaks in production, and what workflow orchestration solves.

Keycloak ile Mikroservis Güvenliği: Gateway, Roller ve Token’ların Anatomisi

Bir e-ticaret senaryosu üzerinden OAuth 2.0/2.1, JWT doğrulama, audience mapper’lar ve BFF pattern’ine uçtan uca bir bakış.

Docker vs Podman

When we talk about containers, Docker is still the most well-known tool in the market. However, in recent years, many companies have…

Connection Providers in Spring Boot Microservices: Understanding NEG, POS, and Why Risk-Based…

Modern Spring Boot microservices rarely talk directly to databases, message queues, or external APIs. Between your code and those systems…

The Machine Behind the Buzzword: What Microservices Infrastructure Is Actually For

Microservices Infrastructure

One Human, Many Hats: Token Exchange in Spring Authorization Server

A walkthrough of a small POS demo that logs a person in once, lets them pick which business context they are working in, and then exchanges…

Modern Backend Architecture with NestJS: From Modular Monolith to Microservices.

Creating modern backend apps is more than just about the API and connecting it to a database. When applications increase both in size and…

Why Senior Developers Should Learn Microservices Architecture? With 7 Tried and Tested Resources

My favorite resources to learn Microservices architecture for Senior developers

Why Most Software Outages Aren’t Bugs — They’re Changes

Software Development

What “High Concurrency” Actually Means — And Why Almost Everyone Gets the Interview Answer Wrong

System Design

How to Test Microservices: A Practical Step-by-Step Guide

Modern applications are increasingly built using microservices instead of large monolithic architectures. Breaking an application into…

From Monolith to Microservices, Part 1: The Architecture I Started With

How spice-me evolves from a modular monolith into a microservice architecture — one deliberate step at a time.

Cross-Region .NET Microservices with AWS App Mesh and ECS Fargate

What It Took to Build a Distributed App That Stays Fast — Everywhere.

Your Microservices Charge an Executive Function Tax

Every new service bumps your AWS bill — and eats working memory from whoever runs the system. Nobody puts that in the RFC.

A Comprehensive Overview of Ballerina Language 🌐☁️

In the modern software engineering landscape, building cloud-native systems often feels like assembling a puzzle with pieces that do not…

Kubernetes for Spring Boot Microservice Developers: From Pods to Production

A hands-on mental model of Kubernetes for microservice developers — Pods, Deployments, Services, Ingress, and where an API gateway fits —…

Basitçe Anlatmak Gerekirse API Gateway Nedir? Mikroservis Mimarilerinde Kullanımı

Giriş: API Gateway Neden Gündemde?

EventBridge and Knative Looked Like Resilience. Production Taught Us Otherwise

Event-driven doesn’t mean failure-proof. And “serverless plumbing” doesn’t mean someone else owns your outages.

What’s New in Oracle Backend for Microservices and AI 2.1.0

Why Teams Are Moving Beyond AWS Step Functions for Modern Workflow Orchestration

As enterprises scale, AWS Step Functions is a popular choice to automate distributed workflows, all within AWS ecosystem. But many teams…

Messages by Default, Direct Calls by Exception in .NET

A practical rule for modular systems: direct calls for immediate decisions, messages for post-commit outcomes, durability when it pays off.