Spring Boot Cheat Sheet: Essential Concepts and Annotations
Spring Boot Cheat Sheet: Essential Concepts
This cheat sheet provides a concise reference of key concepts and annotations in the Spring Boot framework, designed for quick reference during development.
Core Concepts
- Starters: Convenient dependency descriptors that simplify your Maven or Gradle configuration. By including a starter, you get a curated set of dependencies needed for a specific functionality.
spring-boot-starter-web: For building web applications, including RESTful APIs, using Spring MVC
Core Concepts in Operating Systems, Memory, and Cloud Computing
System Architecture Fundamentals
Load-Store Architecture
The most common approach in processing is the load-store architecture.
Registers
Registers are tiny local memory (often called “scratch space”) on the processor into which instructions and data are copied.
Memory Management Concepts
Key concepts related to efficient memory utilization:
- Caching: Buffering a copy of bytes (instructions and/or data) from a lower level at a higher level to exploit locality.
- Prefetching: Preemptively retrieving bytes (
Essential Data Structures: Trees, Stacks, and Queues Explained
Tree Data Structure and Terminology
A tree in data structures is a non-linear, hierarchical organization of data elements, called nodes, linked by edges. Trees are used to represent relationships where data is organized in levels.
Here are the key terminologies:
- Node: A basic unit storing data and links to children.
- Root: The topmost node; it has no parent.
- Parent: A node with one or more children.
- Child: A node directly connected below a parent.
- Siblings: Nodes sharing the same parent.
- Leaf: A node with
Linux Process Management: Data Structures and System Calls
Linux Process Management: Basic Data Structures and System Calls (Chapter 3)
Fundamental Process Concepts (Q1-Q4)
What is a process?
A process is a program in execution.
What are lightweight processes in Linux?
Lightweight processes are processes which offer better support for multithreaded applications.
Explain what is meant by a multithreaded application. Describe how multithreaded applications are implemented in Linux. Give three examples of POSIX-compliant pthread libraries.
A straightforward way to
Digital Logic, Memory, and CAN Bus Communication Principles
Computer Fundamentals and Signal Processing
Defining a Computer System
A computer is a physical form for information processing. It takes data, adapts and compares it, and then generates signals for actuators.
Four Basic Functions of a Computer
- Input (Entry): This is a voltage signal sent by a sensor or switch.
- Processing: The input signal is compared with programmed instructions. Logic circuits transform the input entries into the required output order.
- Storage: Data is stored for comparison with current
Understanding CPU Registers, Instructions, and Addressing Modes
CPU Registers and Architecture Fundamentals
General Purpose Registers (GPRs)
These 16-bit registers are typically used for arithmetic and data manipulation:
- AX (Accumulator): Used for main arithmetic operations, disk I/O, multiplication and division instructions, and decimal corrections.
- BX (Base): Serves as the base register for memory addresses referenced indirectly.
- CX (Counter): Primarily used as a counter in loops and repetitive string operations.
- DX (Data): Used in conjunction with AX during multiplication