Freaks City

Overview of gRPC gRPC is a high-performance, open-source remote procedure call (RPC) framework developed by Google. It uses the HTTP/2 protocol and supports multiple languages such as Java, C++, and Python. gRPC enables cross-language and cross-platform communication with more efficient data serialization and transmission, making it easier for ...

Custom Annotation for Logging Define an annotation to mark methods requiring logging: @Target(ElementType.METHOD) @Retention(RetentionPolicy.RUNTIME) public @interface AuditLog { String category() default ""; String action() default ""; } Log Entity Structure Create a data model for log records: @Data public class S ...

Project Background The evolution of digital technologies has transformed education through online platforms that overcome traditional limitations. These systems enable flexible learning, global collaboration, and personalized educational experiences while promoting resource sharing and accessibility. Technology Stack Spring Boot Backend Spring ...

Running the Service Container Acquire a specific MinIO release image from Docker Hub: docker pull minio/minio:RELEASE.2025-04-22T22-12-26Z Launch a container with the API and web console ports mapped. Adjust the host bind-mount paths as appropriate for your environment: docker run -d \ --name minio \ -p 9000:9000 \ -p 9001:9001 \ -v /o ...

What is a Hash Collision? When discussing hash collisions, we need to understand the fundamental issue: different objects processed through the same hash algorithm produce identical hash values. Consider HashMap's internal structure—a combination of an array with linked lists. When a key-value pair is inserted, the hash code determines which ar ...

Addressing Heap Pressure with Off-Heap Storage Large in-memory caches frequently trigger prolonged Garbage Collection (GC) pauses in Java applications. When cached objects dominate the heap, tuning JVM parameters often yields diminishing returns. Relocating cache storage to off-heap memory isolates it from the GC lifecycle, leveraging physical ...

Understanding Loop-Based Pagination in Java Applications When building enterprise applications that must handle substantial data volumes, implementing an effective pagination strategy becomes critical for maintaining performance while delivering a smooth user experience. Loop-based pagination allows developers to process large datasets incremen ...

Introduction Implementing data export functionality is a common requirement in enterprise Java applications. By leveraging the Apache POI library, developers can generate Excel spreadsheets programmatically. This approach allows for dynamic column mapping using Java annotations and reflection, ensuring that the spreadsheet structure remains syn ...

Introduction Exposure to multiple programming languages benefits developers by helping them understand how code executes at a fundamental level. Many high-level languages are object-oriented due to the clear advantages this paradigm offers. Well-known examples include Rust, Java, C++, and C#. In contrast, procedural languages like C and Pascal ...

1. Custom Annotation for Auto-Fill Define a custom annotation to mark methods that require automatic field populatoin. import java.lang.annotation.ElementType; import java.lang.annotation.Retention; import java.lang.annotation.RetentionPolicy; import java.lang.annotation.Target; @Target(ElementType.METHOD) @Retention(RetentionPolicy.RUNTIME) p ...