One strategy to keep file writes atomic is to ??,<\/p>\n\n\n\n
configure appropriate system settings such as KEEP_FILE_WRITES_ATOMIC<\/p>\n\n\n\n
write to a temporary file, then rename the temporary file to the original file name via system calls<\/p>\n\n\n\n
use a write-through cache to store the file until it can be written atomically<\/p>\n\n\n\n
write the file once, read it back, and then rewrite it<\/p>\n\n\n\n
concatenate the new file to the existing file<\/p>\n\n\n\n
The Correct Answer and Explanation is :<\/strong><\/mark><\/p>\n\n\n\n The correct strategy to keep file writes atomic is to write to a temporary file, then rename the temporary file to the original file name via system calls.<\/p>\n\n\n\n Explanation:<\/strong><\/p>\n\n\n\n Atomic operations are indivisible and uninterruptible, ensuring that a file write operation is completed entirely or not at all. This is crucial for maintaining data integrity, especially in scenarios where system crashes or power failures might occur during a write operation.<\/p>\n\n\n\n Writing to a temporary file and then renaming it to the original file name is a widely adopted method to achieve atomic file writes. This approach leverages the atomicity of the The atomicity of the It’s important to note that this approach assumes the temporary file and the original file reside on the same file system. If they are on different file systems, the Other strategies, such as configuring system settings like In summary, writing to a temporary file and then renaming it to the original file name via system calls is a robust and widely used method to achieve atomic file writes, ensuring data integrity even in the face of unexpected system interruptions.<\/p>\n","protected":false},"excerpt":{"rendered":" One strategy to keep file writes atomic is to ??, configure appropriate system settings such as KEEP_FILE_WRITES_ATOMIC write to a temporary file, then rename the temporary file to the original file name via system calls use a write-through cache to store the file until it can be written atomically write the file once, read it […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[25],"tags":[],"class_list":["post-180232","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/180232","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=180232"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/180232\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=180232"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=180232"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=180232"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}rename<\/code> system call, which is guaranteed by many operating systems, including POSIX-compliant systems. The steps involved are:<\/p>\n\n\n\n\n
rename<\/code> system call to replace the original file with the temporary file.<\/li>\n<\/ol>\n\n\n\nrename<\/code> operation ensures that the original file is replaced entirely by the new file, or not at all, even in the event of a system crash. This method is effective because the rename<\/code> operation is typically atomic on many file systems, meaning it either completes successfully or has no effect, leaving the original file unchanged.<\/p>\n\n\n\nrename<\/code> operation may not be atomic, and additional steps, such as copying the file and then deleting the original, would be necessary.<\/p>\n\n\n\nKEEP_FILE_WRITES_ATOMIC<\/code>, using write-through caches, or writing and rewriting the file, do not inherently guarantee atomicity and may not be reliable for ensuring data integrity.<\/p>\n\n\n\n