25 Microservices Interview Questions
Published on: September 11, 2025
Last updated: October 11, 2025 Read in fullscreen view
Last updated: October 11, 2025 Read in fullscreen view
Recommended for you
- 01 Aug 2024
The Standish Group report 83.9% of IT projects partially or completely fail 339/2059 - 13 Apr 2024 Lessons on Teamwork and Leadership from Chinese story book "Journey to the West" 81/1085
- 02 Nov 2021 What is Terms of Reference (ToR)? 47/1566
- 17 Jul 2023 What Is SSL? A Simple Explanation Even a 10-Year-Old Can Understand 43/121
- 05 Jul 2020 What is Sustaining Software Engineering? 39/1302
- 18 Oct 2020 How to use the "Knowns" and "Unknowns" technique to manage assumptions 38/1089
- 03 Apr 2022 Microsoft Solutions Framework (MSF) 29/1274
- 01 Mar 2023 What is Unit Testing? Pros and cons of Unit Testing? 29/439
- 01 Oct 2020 Fail fast, learn faster with Agile methodology 24/1047
- 14 Oct 2021 Advantages and Disadvantages of Time and Material Contract (T&M) 22/865
- 20 Mar 2022 What is a Multi-Model Database? Pros and Cons? 21/1164
- 18 Aug 2022 What are the consequences of poor requirements with software development projects? 20/274
- 13 Dec 2020 Move fast, fail fast, fail-safe 20/323
- 06 Feb 2021 Why fail fast and learn fast? 20/451
- 17 Mar 2025 Integrating Salesforce with Yardi: A Guide to Achieving Success in Real Estate Business 19/202
- 01 Mar 2023 Bug Prioritization - What are the 5 levels of priority? 17/235
- 18 Dec 2023 The Cone of Uncertainty in Scrum & Requirement Definition 17/701
- 23 Sep 2021 INFOGRAPHIC: Top 9 Software Outsourcing Mistakes 17/439
- 03 Jul 2022 What is the difference between Project Proposal and Software Requirements Specification (SRS) in software engineering? 17/1025
- 10 Nov 2022 Poor Code Indicators and How to Improve Your Code? 16/231
- 31 Dec 2021 What is a Data Pipeline? 16/215
- 10 Apr 2022 What is predictive analytics? Why it matters? 15/192
- 19 Oct 2021 Is gold plating good or bad in project management? 15/816
- 12 Aug 2022 What is End-to-end project management? 15/444
- 05 Jun 2023 Fractional, Part-Time (virtual) or Interim CTO: Who Will Cover Your Business Needs? 14/148
- 26 Sep 2024 Successful Project Management Techniques You Need to Look Out For 14/401
- 10 Apr 2024 The Parking Lot Method: Unlocking a Simple Secret to Supercharge Your Productivity 14/481
- 19 Apr 2021 7 Most Common Time-Wasters For Software Development 14/556
- 25 Apr 2021 What is outstaffing? 14/270
- 22 Sep 2022 Why is it important to have a “single point of contact (SPoC)” on an IT project? 14/940
- 30 Jan 2022 What Does a Sustaining Engineer Do? 14/617
- 18 Oct 2021 Key Elements to Ramping Up a Large Team 13/1198
- 13 Nov 2021 What Is Bleeding Edge Technology? Are bleeding edge technologies cheaper? 13/539
- 08 Oct 2022 KPI - The New Leadership 12/603
- 31 Oct 2021 Tips to Fail Fast With Outsourcing 12/392
- 07 Jul 2022 Managing Project Execution Terms 12/411
- 08 Jan 2024 Ask Experts: Explicitation/Implicitation and Elicitation; two commonly used but barely unraveled concepts 12/327
- 10 Dec 2023 Pain points of User Acceptance Testing (UAT) 11/452
- 23 Jun 2024 Best Practices for Managing Project Escalations 11/207
- 05 Jan 2024 Easy ASANA tips & tricks for you and your team 10/201
- 11 Jan 2024 What are the Benefits and Limitations of Augmented Intelligence? 10/478
- 24 Nov 2023 The project management paradox: Achieving MORE by doing LESS 10/219
- 20 Jul 2022 Software Myths and Realities 10/891
- 14 Jun 2022 Example and Excel template of a RACI chart in Software Development 10/804
- 06 Jun 2022 Change Management at the Project Level 10/309
- 02 May 2022 What Is RAID in Project Management? (With Pros and Cons) 10/813
- 17 Feb 2022 Prioritizing Software Requirements with Kano Analysis 10/304
- 28 Dec 2021 8 types of pricing models in software development outsourcing 10/437
- 13 Jan 2020 Quiz: Test your understanding project cost management 10/609
- 02 Dec 2021 3 Ways to Avoid Scope Creep in IT Consulting 9/207
- 22 May 2022 What are common mistakes that new or inexperienced managers make? 9/286
- 02 Nov 2022 Difference between Change Management and Project Management 9/232
- 12 Mar 2024 How do you create FOMO in software prospects? 9/167
- 07 Dec 2023 12 project management myths to avoid 8/189
- 09 May 2022 Build one to throw away vs Second-system effect: What are differences? 8/316
- 15 May 2022 20 Common Mistakes Made by New or Inexperienced Project Managers 8/281
- 27 Jan 2020 Should a project manager push developers to work more hours due to mistakes of manager schedule setting? 8/434
- 06 Oct 2025 AI Agents in DevOps: From Automated Runbooks to Self-Healing Pipelines 7/99
- 01 Mar 2024 (AI) Artificial Intelligence Terms Every Beginner Should Know 7/303
- 14 Mar 2024 Why should you opt for software localization from a professional agency? 6/140
- 26 Dec 2023 Improving Meeting Effectiveness Through the Six Thinking Hats 6/254
- 30 Nov 2023 Project Managers, Focus on Outcomes — Not Deliverables 6/160
- 17 Oct 2021 Does Fast Tracking increase project cost? 6/368
- 06 Nov 2019 How to Access Software Project Size? 6/249
- 10 May 2022 Levels of Teamwork 6/197
- 03 Jan 2023 Organizing your agile teams? Think about M.A.T (Mastery, Autonomy, Purpose) 6/375
- 01 Mar 2024 10 Project Management Myths 5/143
- 01 Aug 2022 Is planning "set it and forget it" or "set it and check it"? 3/277
- 21 Jun 2024 Dead Horses and the Escalation of Commitment 3/139
- 02 Jun 2024 Reviving Ancient Wisdom: The Spiritual Side of Project Management 3/233
- 18 Feb 2026 "Hit and Run" Project Management: Balancing Speed with Sustainability 2/7
Kit of 25 Microservices Interview Questions
1. Basic Knowledge about Microservices
| What are microservices? What are the main differences between microservices and monolithic architecture? | Microservices is a software architecture that divides a system into small, independent services communicating via APIs. Monolithic architecture is a single large application that is hard to scale or deploy independently. |
| What are the advantages and disadvantages of microservices architecture in real-world production environments? | Pros: easy to scale, independent deployment, flexible technology stack. Cons: complex management, higher infrastructure costs, harder debugging. |
| In which cases should microservices NOT be applied? | When the application is small, the dev team is small, or the team lacks DevOps/Kubernetes experience. |
| Describe Service Registry and explain why it’s important in microservices. | Service Registry stores information about services and their locations, enabling service discovery and load balancing. |
| What’s the difference between Stateless and Stateful in microservices? | Stateless doesn’t store session state between requests, making it easier to scale. Stateful stores session state, making scaling more complex. |
2. Design & Architecture
| How do you define service boundaries in microservices? | Based on domain-driven design (DDD) and bounded contexts. |
| What is the role of an API Gateway and what benefits does it bring? | Acts as a single entry point, managing authentication, routing, rate limiting, and logging. |
| Compare Synchronous vs Asynchronous communication in microservices. | Synchronous: immediate response using HTTP/gRPC. Asynchronous: decoupled communication using message brokers. |
| When should Event-Driven Architecture be used? | When asynchronous processing, loose coupling, and scalability are required. |
| How do you handle cross-cutting concerns such as logging, security, and rate limiting in microservices? | Use API Gateway, middleware, or a service mesh like Istio. |
| What are the 3 C’s of microservices? | The 3 C’s are Componentize, Collaborate, and Connect. |
3. Deployment & Management
| What are common deployment patterns for microservices? | Blue-Green Deployment, Canary Release, Rolling Update. |
| Why is containerization (Docker, Kubernetes) a good fit for microservices? | It provides isolated environments, easy deployment, scalability, and efficient management. |
| How do you manage service discovery in Kubernetes? | By using internal DNS and Kubernetes Services. |
| What’s your experience with centralized configuration? | Use Spring Cloud Config, Consul, or Kubernetes ConfigMap/Secrets. |
| How would you design an autoscaling mechanism for microservices? | Use Horizontal Pod Autoscaler (HPA) based on CPU, memory, or custom metrics. |
4. Data & Integration
| How do you manage distributed data among different services? | Avoid shared databases; use event sourcing or the Saga pattern. |
| Explain the Saga pattern and how it handles distributed transactions. | Saga divides a large transaction into smaller ones, each with its own rollback step in case of failure. |
| Compare “Database per Service” vs “Shared Database”. | Database per service: independent, scalable, but hard to join. Shared database: easy to join, but tightly coupled. |
| How do you synchronize data when a microservice goes down and comes back online? | Use message queues, event sourcing, or retry mechanisms. |
| Describe how to apply CQRS in microservices. | Separate command (write) and query (read) operations to optimize performance and scale independently. |
5. Security, Monitoring & Reliability
| What are common API security techniques in microservices? | OAuth2, JWT, mTLS, API Key. |
| How to implement Distributed Tracing and what are its benefits? | Use Jaeger or Zipkin to trace requests across multiple services. |
| How do you handle cascading failures in a microservices system? | Use Circuit Breaker, Bulkhead pattern, and reasonable timeouts. |
| Explain the Circuit Breaker pattern and a real-world use case. | Prevents repeated calls to a failing service, helping stabilize the system. |
| What are key metrics to monitor in microservices? | Latency, throughput, error rate, resource usage. |
[{"displaySettingInfo":"[{\"isFullLayout\":false,\"layoutWidthRatio\":\"\",\"showBlogMetadata\":true,\"showAds\":true,\"showQuickNoticeBar\":true,\"includeSuggestedAndRelatedBlogs\":true,\"enableLazyLoad\":true,\"quoteStyle\":\"1\",\"bigHeadingFontStyle\":\"1\",\"postPictureFrameStyle\":\"1\",\"isFaqLayout\":false,\"isIncludedCaption\":false,\"faqLayoutTheme\":\"1\",\"isSliderLayout\":false}]"},{"articleSourceInfo":"[{\"sourceName\":\"\",\"sourceValue\":\"\"}]"},{"privacyInfo":"[{\"isOutsideVietnam\":false}]"},{"tocInfo":"[{\"isEnabledTOC\":true,\"isAutoNumbering\":false,\"isShowKeyHeadingWithIcon\":false}]"},{"termSettingInfo":"[{\"showTermsOnPage\":true,\"displaySequentialTermNumber\":true}]"}]
Via
{content}
Explore more on these topics
![Top 10 Vietnam IT Outsourcing Vendors [MOST UPDATED] - TIGO CONSULTING](/Uploads/Vietnam12012023111455_thumb.jpg "Best IT Outsourcing Companies in Vietnam with Reviews 2023")
Guest Blogging: The Definitive Guide
Top Trending Topics
Share This
Link copied!
Recently Updated News