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php中文网 Courses
php中文网 Courses
Dec 8, 2021 · Backend Development

Top 10 New Features in PHP 8.1

This article introduces the ten most important new features of PHP 8.1—including enums, fibers, the never return type, readonly properties, final class constants, array_is_list(), fsync/fdatasync, string‑key array unpacking, the $_FILES full_path key, and the IntlDatePatternGenerator class—each explained with clear code examples.

BackendReadOnlyarray_is_list
0 likes · 15 min read
Top 10 New Features in PHP 8.1
360 Tech Engineering
360 Tech Engineering
Dec 14, 2020 · Operations

Understanding Linux I/O Flush: fsync, fdatasync, sync, O_DIRECT, O_SYNC, REQ_PREFLUSH and REQ_FUA

This article explains the differences and purposes of Linux I/O flushing mechanisms—including fsync(), fdatasync(), sync(), the O_DIRECT and O_SYNC open flags, and the REQ_PREFLUSH and REQ_FUA bio request flags—illustrated with dd experiments, kernel flag tables, and practical commands for managing disk write caches.

I/OKernelLinux
0 likes · 12 min read
Understanding Linux I/O Flush: fsync, fdatasync, sync, O_DIRECT, O_SYNC, REQ_PREFLUSH and REQ_FUA
Refining Core Development Skills
Refining Core Development Skills
Jun 5, 2020 · Fundamentals

Linux Write Operation: How Data Flows from User Space to Disk

This article explains how Linux write operations work internally, detailing how data flows from user space through the kernel's page cache to disk, including the timing of actual disk writes and kernel parameters that control writeback behavior.

File I/OLinux kernelWrite Operations
0 likes · 8 min read
Linux Write Operation: How Data Flows from User Space to Disk