Found a total of 10000 related content
cURL in PHP: How to Use the PHP cURL Extension in REST APIs
Article Introduction：The PHP Client URL (cURL) extension is a powerful tool for developers, enabling seamless interaction with remote servers and REST APIs. By leveraging libcurl, a well-respected multi-protocol file transfer library, PHP cURL facilitates efficient execution of various network protocols, including HTTP, HTTPS, and FTP. This extension offers granular control over HTTP requests, supports multiple concurrent operations, and provides built-in security features.
2025-03-14
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1045
Understanding Java Race Conditions and Solutions
Article Introduction：The race condition is the data inconsistency problem caused by unorderly accessing shared resources between threads in a multi-threaded environment. 1. It may occur when multiple threads read and write the same variable at the same time and at least one thread modifies data; 2. Commonly used in non-thread-safe collection classes, singleton state modifications and other scenarios; 3. It can be identified through unstable results, tool detection, and outlier judgments; 4. Solutions include the use of synchronized, Lock interfaces, atomic classes, and thread-safe collections, while volatile is used to ensure visibility but cannot prevent all competition situations.
2025-07-16
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802
How does Workerman compare to traditional PHP web servers (Apache, Nginx)?
Article Introduction：This article compares Workerman, a high-performance PHP server, to traditional servers like Apache and Nginx. Workerman's multi-process/thread architecture offers superior concurrency and performance for real-time apps (chat, games) and long-running
2025-03-11
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409
How to concatenate Strings in Java
Article Introduction：The use of operators is suitable for simple string stitching, but is inefficient in loops; 2. The concat() method is used for small-scale direct stitching, returning new strings; 3. StringBuilder efficiently splices a large number of strings in a single thread, and is recommended for use in loops; 4. StringBuffer is a thread-safe StringBuilder, used in multi-threaded environments but has low performance; 5. String.join() is suitable for using delimiters to connect multiple strings or collection elements; 6. String.format() is used to format output; methods should be selected based on performance and readability to avoid using operators in loops.
2025-08-11
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522
Top Java interview questions
Article Introduction：High-frequency questions in Java interviews are mainly focused on basic syntax, object-oriented, multithreaded, JVM and collection frameworks. The most common questions include: 1. There are 8 basic Java data types, such as byte, short, int, long, float, double, char and boolean. It is necessary to note that String is not the basic data type; 2. Final is used to modify classes, methods or variables to represent immutable, and finally is used to ensure code execution in exception processing. Finalize is an Object class method for cleaning before garbage collection; 3. Multi-thread synchronization can be achieved through synchronized keywords, ReentrantLock, and vo.
2025-07-14
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732
How does Python's Global Interpreter Lock (GIL) impact concurrent execution in multi-threaded applications?
Article Introduction：Python's Global Interpreter Lock (GIL) protects objects in a multithreaded environment by ensuring that only one thread executes Python bytecode at the same time. 1.GIL exists mainly because CPython uses reference counting for garbage collection, and the reference count must be updated atomically to avoid data corruption under multi-threading, and the introduction of global locks simplifies the implementation. 2. GIL limits the performance of CPU-intensive multithreaded programs, because all threads compete for the same lock and cannot be truly executed in parallel. 3. It has little impact on I/O-intensive programs, because GIL will be released during I/O operation. 4. Pay attention to GIL impact when writing high-concurrency CPU tasks, server-side applications or multi-threaded parallel computing. 5. Methods to bypass GIL include using
2025-06-05
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583
Java Data Structures and Algorithms for Performance
Article Introduction：The key to optimizing Java program performance lies in the rational selection of data structures and algorithms. 1. Select appropriate collection classes according to the scene, such as frequent access to intermediate elements, use ArrayList, and use LinkedList to operate head or tail, find multi-priority HashMap or HashSet, and avoid thread-safe classes and capacity expansion losses. 2. Avoid repeated calculations, use memory cache results to reduce time complexity. 3. Master efficient sorting search algorithms, such as insertion sorting, counting sorting, binary search, KMP, etc., and select according to data characteristics. 4. Reduce GC pressure, avoid creating objects in loops, use object pools, StringBuilder and use StreamAPI with caution.
2025-07-23
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248
How to use PHP to combine AI to generate image. PHP automatically generates art works
Article Introduction：PHP does not directly perform AI image processing, but integrates through APIs, because it is good at web development rather than computing-intensive tasks. API integration can achieve professional division of labor, reduce costs, and improve efficiency; 2. Integrating key technologies include using Guzzle or cURL to send HTTP requests, JSON data encoding and decoding, API key security authentication, asynchronous queue processing time-consuming tasks, robust error handling and retry mechanism, image storage and display; 3. Common challenges include API cost out of control, uncontrollable generation results, poor user experience, security risks and difficult data management. The response strategies are setting user quotas and caches, providing propt guidance and multi-picture selection, asynchronous notifications and progress prompts, key environment variable storage and content audit, and cloud storage.
2025-07-25
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1079
Dave The Diver: How To Catch Spider Crabs
Article Introduction：In Dave The Diver, there are some creatures that are not easy to catch. Or, catch alive that is. The spider crab is one of those very species, making it seem like the only way to bring these crustaceans back up to land is to viciously crack them up w
2025-01-10
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903
Prepare for Interview Like a Pro with Interview Questions CLI
Article Introduction：Prepare for Interview Like a Pro with Interview Questions CLI
What is the Interview Questions CLI?
The Interview Questions CLI is a command-line tool designed for JavaScript learners and developers who want to enhance their interview
2025-01-10
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1516
Soft Deletes in Databases: To Use or Not to Use?
Article Introduction：Soft Deletes: A Question of DesignThe topic of soft deletes, a mechanism that "flags" records as deleted instead of physically removing them, has...
2025-01-10
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1115
