HTTP Service: Installation and Configuration on Windows and Linux
Item 4 – Installation and Configuration of the HTTP Service
Introduction
The use of services such as FTP has enabled users to access information located on a distant server. HTTP emerged to provide users access to remote information in a simple and intuitive way, resulting in what is known as the World Wide Web (WWW). Users use this service to access web pages or documents. In addition to text, these pages may include other elements that also provide user information, including images, sound, and
Read MoreBranch and Bound, Sorting, and Searching Algorithm Analysis
FIFO Branch and Bound Solution Strategy
The FIFO (First In, First Out) Branch and Bound strategy explores a solution space using a queue-based approach, processing subproblems in the order they are created. The first subproblem generated is the first one to be explored (like a breadth-first search).
How FIFO Works
- Queue Initialization: Start with the root problem in the queue.
- Branching: Generate subproblems (branches) and add them to the queue.
- Bounding: For each subproblem, calculate an upper or lower
Software Development Concepts: Concurrency, Testing, and Design
Concurrency and Asynchronous Operations
Race Condition: Occurs when the outcome of a program depends on the non-deterministic timing of events, such as the order in which threads are processed and executed. This happens when multiple threads share the same resource. To prevent, use proper synchronization and wrap resource access in locks.
Deadlock: A situation where two or more threads are waiting for resources held by each other, preventing further progress. To prevent, use nested locks and a lock
Read MoreKey Concepts in Software Development
Delegates, Lambdas, and Closures
Delegates: Type-safe function pointers
Lambdas: Anonymous functions
Closures: Functions that capture their environment
Immutable Objects
Cannot be modified after creation
Thread-safe by design
Examples: strings, DateTime
Memory Management
Garbage collection
ref: Pass by referenceout: Must assign value
Pair Programming
Two developers work together
Driver writes code
Navigator reviews and plans
Regular role switching
IDE Features
Debugging tools
Code completion
Refactoring support
Version
Computer Interconnection: Buses, Channels, and Interfaces
Selective Cache Invalidation
To invalidate content selectively, the cache is flushed before a read operation. This forces an update of the main memory content. For a write operation, the processor I/O or channel acts as an extension of DMA, further reducing CPU interference. Traditionally used in mainframes, it’s now common in file servers. These specialized processors execute I/O programs, typically located in the main memory.
Types of Channels
- Selector: Controls multiple fast devices, transferring
Data Structures and Algorithms: Key Concepts
Data Structures
Arrays: Fixed-size, sequentially stored elements. Efficient for index-based access.
Linked Lists: Elements (nodes) linked using pointers. Efficient for insertions/deletions.
Stacks (LIFO): Operations: push(e), pop(), top(), is_empty(), len().
Queues (FIFO): Operations: enqueue(e), dequeue(), first(), is_empty(), len().
Binary Trees: Each node has at most two children (left and right).
- Binary Search Trees (BST): Nodes follow left < root < right rule.
- AVL Trees: Self-balancing BSTs