{"id":1541,"date":"2019-08-06T08:11:53","date_gmt":"2019-08-06T08:11:53","guid":{"rendered":"https:\/\/www.testpreptraining.com\/tutorial\/?page_id=1541"},"modified":"2020-05-02T05:40:09","modified_gmt":"2020-05-02T05:40:09","slug":"amazon-s3","status":"publish","type":"page","link":"https:\/\/www.testpreptraining.ai\/tutorial\/aws-sysops-administrator-associate\/amazon-s3\/","title":{"rendered":"Amazon S3"},"content":{"rendered":"\n<ul class=\"wp-block-list\"><li>Amazon Simple Storage Service is called as\nAmazon S3<\/li><li>Provides easy-to-use management features to\norganize data and configure access controls. <\/li><li>It is designed for 99.999999999% (11 9&#8217;s) of\ndurability<\/li><li>It&nbsp; is an\nobject storage service <\/li><li>Offers industry-leading scalability, data\navailability, security, and performance. <\/li><li>Use cases include <ul><li>Websites<\/li><\/ul><ul><li>mobile\napplications<\/li><\/ul><ul><li>backup\nand restore<\/li><\/ul><ul><li>archive<\/li><\/ul><ul><li>enterprise\napplications<\/li><\/ul><ul><li>IoT\ndevices<\/li><\/ul><ul><li>big\ndata analytics. <\/li><\/ul><\/li><\/ul>\n\n\n\n<p><strong>S3 Access control <\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>defines who can access objects and buckets within S3<\/li><li>the type of access (e.g., READ and WRITE). <\/li><li>authentication verifies the identity of a user who is trying to access AWS<\/li><\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Amazon S3 Concepts<\/strong><\/h4>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"594\" height=\"214\" src=\"https:\/\/www.testpreptraining.ai\/tutorial\/wp-content\/uploads\/2019\/08\/image008.png\" alt=\"\" class=\"wp-image-1563\"\/><\/figure>\n\n\n\n<p><strong><span style=\"text-decoration: underline;\">Buckets \u2013 <\/span><\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>It is a container for objects stored in Amazon S3. <\/li><li>Every object is contained in a bucket. <\/li><li>URL addressing, as if object named photos\/puppy.jpg stored in johnsmith bucket, then URL is http:\/\/johnsmith.s3.amazonaws.com\/photos\/puppy.jpg <\/li><li>Buckets helps to <ul><li>organize the S3 namespace at the highest level<\/li><\/ul><ul><li>identify the account responsible for storage and data transfer charges<\/li><\/ul><ul><li>play a role in access control<\/li><\/ul><ul><li>serve as the unit of aggregation for usage reporting. <\/li><\/ul><\/li><li>Buckets can be created in a specific region. <\/li><li>Can also configure a bucket every time an object is added to it<\/li><li>S3 generates a unique version ID and assigns it to the object.  <\/li><\/ul>\n\n\n\n<p>Rules for naming S3 buckets in all AWS Regions:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Bucket names must be unique across all existing\nbucket names in Amazon S3.<\/li><li>Bucket names must comply with DNS naming\nconventions.<\/li><li>Bucket names must be at least 3 and no more than\n63 characters long.<\/li><li>Bucket names must not contain uppercase\ncharacters or underscores.<\/li><li>Bucket names must start with a lowercase letter\nor number.<\/li><li>Bucket names must be a series of one or more\nlabels. Adjacent labels are separated by a single period (.). Bucket names can\ncontain lowercase letters, numbers, and hyphens. Each label must start and end\nwith a lowercase letter or a number.<\/li><li>Bucket names must not be formatted as an IP\naddress (for example, 192.168.5.4).<\/li><li>When you use virtual hosted\u2013style buckets with Secure Sockets Layer (SSL), the SSL wildcard certificate only matches buckets that don&#8217;t contain periods. To work around this, use HTTP or write own certificate verification logic. We recommend that you do not use periods (&#8220;.&#8221;) in bucket names when using virtual hosted\u2013style buckets. <\/li><\/ul>\n\n\n\n<p><strong>Objects<\/strong> <strong>\u2013<\/strong> <\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Fundamental entities stored in Amazon S3<\/li><li>Consist of object data and metadata. <\/li><li>Data portion is opaque to Amazon S3 or stored as\nit is.<\/li><li>Metadata is a set of name-value pairs that\ndescribe the object and include <ul><li>the\ndate last modified<\/li><\/ul><ul><li>standard\nHTTP metadata &#8211; Content-Type<\/li><\/ul><\/li><li>Can specify custom metadata at the time the\nobject is stored. <\/li><li>An object is uniquely identified within a bucket\nby a key (name) and a version ID.<\/li><\/ul>\n\n\n\n<p><strong><span style=\"text-decoration: underline;\">Keys<\/span><\/strong> \u2013 <\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Unique identifier for an object within a bucket.\n<\/li><li>Every object in a bucket has exactly one key. <\/li><li>Every object in Amazon S3 can be uniquely\naddressed as <ul><li>Combination\nof a bucket, key, and version ID uniquely identify each object<\/li><\/ul><ul><li>web\nservice endpoint, bucket name, key, and optionally, a version. <\/li><\/ul><\/li><li>Example, in the URL\nhttp:\/\/doc.s3.amazonaws.com\/2006-03-01\/AmazonS3.wsdl, &#8220;doc&#8221; is the\nname of the bucket and &#8220;2006-03-01\/AmazonS3.wsdl&#8221; is the key. <\/li><\/ul>\n\n\n\n<p><strong><span style=\"text-decoration: underline;\">Regions<\/span><\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>You can choose the geographical region where S3 will store the buckets you create. <\/li><li>Choose a region to <ul><li>optimize latency<\/li><\/ul><ul><li>minimize costs<\/li><\/ul><ul><li>address regulatory requirements<\/li><\/ul><\/li><li>Objects stored in a region never leave the region unless you explicitly transfer them to another region.  <\/li><\/ul>\n\n\n\n<p>Amazon S3 Data Consistency Model \u2013 <\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>S3 provides read-after-write consistency for PUTS of new objects in S3 bucket in all regions with one caveat. <\/li><li>The caveat is that if you make a HEAD or GET request to the key name (to find if the object exists) before creating the object, Amazon S3 provides eventual consistency for read-after-write.<\/li><li>S3 offers eventual consistency for overwrite PUTS and DELETES in all regions.<\/li><li>Updates to a single key are atomic. If you PUT to an existing key, a subsequent read might return the old data or the updated data, but it will never return corrupted or partial data.<\/li><li>High data availability by replicating data across multiple servers within Amazon&#8217;s data centers. <\/li><li>If a PUT request is successful, data is safely stored. <\/li><li>Following behavior for information about the changes<ul><li>A process writes a new object to Amazon S3 and immediately lists keys within its bucket. Until the change is fully propagated, the object might not appear in the list.<\/li><\/ul><ul><li>A process replaces an existing object and immediately attempts to read it. Until the change is fully propagated, Amazon S3 might return the prior data.<\/li><\/ul><ul><li>A process deletes an existing object and immediately attempts to read it. Until the deletion is fully propagated, Amazon S3 might return the deleted data.<\/li><li>A process deletes an existing object and immediately lists keys within its bucket. Until the deletion is fully propagated, Amazon S3 might list the deleted object. <\/li><\/ul><\/li><\/ul>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Amazon Simple Storage Service is called as Amazon S3 Provides easy-to-use management features to organize data and configure access controls. It is designed for 99.999999999% (11 9&#8217;s) of durability It&nbsp; is an object storage service Offers industry-leading scalability, data availability, security, and performance. Use cases include Websites mobile applications backup and restore archive enterprise applications&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":383,"menu_order":3,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"categories":[],"tags":[7,46],"class_list":["post-1541","page","type-page","status-publish","hentry","tag-aws","tag-aws-sysops-administrator"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Amazon S3 - Testprep Training Tutorials<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.testpreptraining.ai\/tutorial\/aws-sysops-administrator-associate\/amazon-s3\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Amazon S3 - Testprep Training Tutorials\" \/>\n<meta property=\"og:description\" content=\"Amazon Simple Storage Service is called as Amazon S3 Provides easy-to-use management features to organize data and configure access controls. 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