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COTop 20 Interview Questions On Microservices ✅
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COThese 30 questions are MOST ASKED interview questions and must for interview centric preparations.
Comment "pdf" for these questions and detailed answers.
Microservices - Must-Know Interview Questions
1️⃣What is a Microservice?
2️⃣Advantages of Microservices over Monolithic architecture
3️⃣When should you not use Microservices?
4️⃣Design principles of Microservices
5️⃣What is the 12-Factor methodology?
Important
________
6️⃣Why Spring Boot + Spring Cloud for Microservices?
7️⃣Should multiple Microservices share a database? Why / Why not?
8️⃣How do Microservices communicate internally and externally?
9️⃣Which Microservice design patterns have you used and why?
1️⃣0️⃣Database design patterns in Microservices
Super Important
_______
1️⃣1️⃣What is the SAGA pattern?
1️⃣2️⃣Explain CQRS
1️⃣3️⃣Best patterns for read-heavy vs write-heavy systems
1️⃣4️⃣Choreography vs Orchestration
1️⃣5️⃣Fault tolerance mechanisms in Spring Microservices
Comment "pdf" for rest of the questions and detailed answers.
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@coding_with_deepa
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BAMicroservices Architecture in 30 Seconds
#microservices #interview #answer #interviewprep #database #java #softwaredeveloper #coding
@backendmiles147
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BAFew microservices Interview Questions
👉 Follow and comment YES for answers
👉Message to get access to java interview preparation website
[Java javascript microservices multithreading kafka dsa python computerscience javaprogramming]
#java #javainterview #javaprogramming #javaquiz #microservices #multithreading #kafka #computerscience #javascript #dsa #codingbootcamp #codinglife #softwaredeveloper #softwareengineer #programmingisfun
@backend.interview.preparation
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COMicroservices Interview Prep Master Sheet
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#Java #SpringBoot #Microservices #SystemDesign
#ReactJS #JavaDeveloper #FullStackDeveloper
#BackendDevelopment #FrontendDevelopment
#TechEducation #Coding
#Programming #SoftwareEngineer #TechTutorial
#APIDevelopment #WebDevelopment #CloudComputing #JavaSpringBoot
#LearnCoding #ProgrammingTutorial
#JavaScript #SoftwareDevelopment #TechReels
#CodeLife #TechTips #CodeWithMe #DeveloperLife
#TechCommunity #LearnToCode #ITCareer
@conceptsofcs
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IA🎯 Crack Your Java Interview at EPAM Senior Software Engineer Level!
Here are actual interview questions asked for this role – master them and boost your chances! 🚀
1️⃣ Find the actual longest substring without repeating characters (given input: “abcabcbb”).
2️⃣ Lambda Expressions in Java.
3️⃣ Intermediate Functions in Streams.
4️⃣ Difference between flatMap and map in Stream.
5️⃣ Function Interface in Java.
6️⃣ Explanation of collect(Collectors.groupingBy(Function.identity(), Collectors.counting())) vs Collectors.counting().
7️⃣ Explain the whole code for collect(Collectors.groupingBy(Function.identity(), Collectors.counting())) step by step.
8️⃣ Find the character that is repeating the maximum number of times and determine if its occurrence is odd or even (using Stream API) for input: “aabbbccccddddd”.
9️⃣ Parallel Streams in Java.
🔟 Metaspace in Java 8.
🔢 Mark and Sweep Algorithm in Java.
🔢 Old and Young Generations in Java Garbage Collection.
🔢 ClassLoader in Java.
🔢 Spring Boot Annotations.
🔢 How Spring Security Works in Authentication and Authorization.
🔢 Dependency Injection Process.
🔢 Difference between @Interceptor and @Filter in Spring Boot.
🔢 @ConditionalOnBean Property.
🔢 @ConditionalOnBean Property Example in Code.
🔢 Difference between @Pointcut and @Advice.
🔢 Actual code example for creating a custom actuator in Spring Boot.
🔢 Key Challenges in Microservice Communication.
🔢 Kafka Components [Click here].
🔢 Kafka Topics.
🔢 Optional.of and Optional.ofNullable in Java.
🔢 Optional.orElse in Java.
🔢 Optional.orElseGet Example in Java.
🔢 Executor Service in Java.
🔢 AWS Key Components.
💡 These real interview questions test both theory and application. Be ready with clear examples to ace your interview!
👉 Save this post for later, and tag a friend who’s preparing for tech interviews! 🙌
#JavaInterview #SeniorSoftwareEngineer #SoftwareEngineerLife #JavaDeveloper #EPAM #TechInterview #CodingLife #Microservices #SpringBoot #JavaStreams #AWS #Kafka #ProgrammingTips #TechContentCreator #CodeNewbie
@iamsaumyaawasthi
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CO50 Spring boot interview questions.
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#java #springboot #restapi #backbenchers #backend #backenddeveloper #bca #btech #fullstack #fullstackdeveloper #jobs #itjobs #javainterviewquestions #microservices #code #coding #coder #developer #mca #javajavajava #javaawsdeveloper #systemdesign #javacoding #javadeveloper #javaprogramming #coding #interviewquestions
@coding__lyf
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COMicroservices, explained by cats. #cat #microservices #architecture #coding #software
@coding.kitty
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SO1. What is microservices architecture?
• 2. Difference between monolith and microservices?
• 3. What problems does microservices solve?
• 4. What are the key characteristics of microservices?
• 5. What is bounded context in microservices?
8. Explain API Gateway pattern.
• 9. What is Circuit Breaker pattern?
• 10. Explain Service Discovery pattern.
• 11. What is Saga pattern? Types of Saga?
• 12. What is Strangler Fig pattern?
Comment microservice to get a PDF
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@softwarengineering
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MIFamous Interview Problem:
How did you improve API response time from 2 seconds to 200 milli seconds.
Follow & Comment "PDF" to get Detailed Notes or refer pinned comment:
⸻
1️⃣ Find the Slow Part (Profiling)🕵️♂️
𝐃𝐞𝐟𝐢𝐧𝐢𝐭𝐢𝐨𝐧: Identify which step is causing delays— DB, code, or external call.
𝐄𝐱𝐚𝐦𝐩𝐥𝐞: WhatsApp takes time to load old messages.
⸻
2️⃣ Cache It (Redis) ⚡
𝐃𝐞𝐟𝐢𝐧𝐢𝐭𝐢𝐨𝐧: Keep frequent data in memory for instant access.
𝐄𝐱𝐚𝐦𝐩𝐥𝐞: Instagram shows your feed instantly as it’s cached.
⸻
3️⃣ Async & Queue ⏳
𝐃𝐞𝐟𝐢𝐧𝐢𝐭𝐢𝐨𝐧: Move non-critical tasks to run in the background.
𝐄𝐱𝐚𝐦𝐩𝐥𝐞: Flipkart send emails while you keep shopping.
⸻
4️⃣ Optimize Database 🗄️
𝐃𝐞𝐟𝐢𝐧𝐢𝐭𝐢𝐨𝐧: Make queries faster, split tables, or add indexes.
𝐄𝐱𝐚𝐦𝐩𝐥𝐞: Amazon processes orders in parallel so checkout stays fast.
⸻
5️⃣ Reduce Network & Payload 🌐
𝐃𝐞𝐟𝐢𝐧𝐢𝐭𝐢𝐨𝐧: Send only necessary data, small payload, and batch requests.
𝐄𝐱𝐚𝐦𝐩𝐥𝐞: YouTube loads video thumbnails and titles first so pages appear quickly.
⸻
6️⃣ Handle External Services 🔒
𝐃𝐞𝐟𝐢𝐧𝐢𝐭𝐢𝐨𝐧: Add retries, timeouts, and cache third-party responses to avoid delays.
𝐄𝐱𝐚𝐦𝐩𝐥𝐞: Payment gateways don’t block checkout—they retry if slow.
⸻
💡Interview Tip:
Start by describing the scale—high traffic and sub-second API goals.
Then explain your approach step by step: covering all above points
End by showing how these measures together make the system fast, reliable, and scalable.
#SystemDesign #TechCareers #mission_compile #interview #google #TechReels #SoftwareEngineering #TechCommunity #API #BackendDevelopment #InterviewPrep #InstaTech #EngineeringLife #LearnWithReels #coding #trending #dsa #leetcode
[API Optimization, System Design Interview, Scale APIs, Cache, Async Processing, Database Optimization, Reduce Payload, External Service Handling, Fast API, High Traffic Systems, Backend Engineering, Distributed Systems, Scalable Systems, Tech Reels, Learn System Design, Programming Tips, Software Engineering]
@mission_compile
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COTop microservices patterns to learn #microservices #backenddevelopment #hungrycoders #softwaredev #javaprogramming
@codingwithaman
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MUComment “Microservice”
If you’re preparing for Microservices interviews, this question is a game-changer. Most top tech companies ask this to assess your real-world problem-solving skills.
Question: How do you handle inter-service communication failures in a Microservices architecture?
Learn how to use Circuit Breaker (Resilience4j/Hystrix), Retry Mechanism, Timeout Handling, and Event-Driven Architecture to design fault-tolerant, scalable, and resilient Microservices.
Interview Tip: Don’t just mention theory—explain how you’ve implemented these solutions in real projects.
Save this reel & practice it before your next interview.
#microservice #interviewquestion #interviewprep #apigateway
@mubeenkazi
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