Java Interview Discussion for Juniors | Spring Boot, Core Java, Microservices, Threads, Redis

Java Interview Discussion for Juniors | Spring Boot, Core Java, Microservices, Threads, Redis Many junior developers grasp Spring Boot but often struggle with fundamental Java concepts during interviews and projects. This video discusses common issues arising from a limited understanding of internal workings, especially concerning "java hashmap" and "threading." We explore how a deeper knowledge of "hashmap internal working" and the "java collections framework" can prevent common software development problems. Chapters: 00:00 Java Interviews | Java 00:10 Annotations Production | Write Annotations 00:22 Threads Touch | Touch Unsafe 00:33 Concurrent Hashmap | Hashmap Important 00:43 Service Caching | Loaded Redis 00:55 Redis Useful | Redis Cash 01:07 Expiry | Ttl Wrong 01:18 Frameworks Spring | Stale Data 01:31 Magic Happens | Beans Decides 01:42 Blame Spring | Painful Beans 01:54 Startup Fails | Fails Stack 02:05 Ignore Profiles | Profiles 02:18 Microservices Think | Microservices 02:30 Services Debugging | Services Early 02:42 Logs Useful | Important Logging 02:52 Downstream Service | Services Yes 03:03 Useful Prometheus | Open Telemetry 03:14 Logs Tell | Logs 03:25 Retry Circuit | Use Retry 03:37 Exactly Retry | Retry Needs 03:48 Api Gateway | Api 03:58 Useful Microservices | Microservices 04:09 Security Gateway | Load Balancer 04:19 Use Streams | Streams 04:31 Simple Pipeline | Dreams Good 04:42 Item Map | Map Converts 04:52 Optional Feature | Optional 05:03 Null Checks | Reduces Null 05:15 Tasks Parallel | Parallel Combine 05:26 Useful Dtos | Records Useful 05:39 Matching Improves | Hierarchies Yes 05:51 Memorize Syntax | Difference Java 06:02 Exactly Deadlocks | Deadlocks Happen 06:14 Virtual Threads | Java 25 06:25 Language Keeps | New Features 06:36 Thread Local | User Context 06:47 Thread Pools | Threads Reused 06:58 Executor Service | Thread Pools 07:09 Submit Difference | Execute Submit 07:21 Deadlock Nastiest | Deadlock 07:32 Lock Ordering | Prevent Lock 07:44 Thread Visibility | Thread Update 07:55 Counters Volatile | Volatile 08:05 Proxy Pattern | Design Patterns 08:16 Uses Proxies | Logging Uses 08:27 Compatibility Decorator | Decorator 08:37 Filter Chains | Handlers Step 08:49 Inheritance Designs | Exactly Inheritance 09:01 Penguin Example | Sql 09:12 Join Jpa | Join Names 09:22 Queries App | Small Queries 09:32 Eager Loading | Fetch Strategy 09:43 Serializable | Yes Serializable 09:55 Learn Feature | Junior Developers 10:06 Microservices Absolutely | Spring Microservices #javainterview #javaprogramming #javainterviewquestions #javadeveloper