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Questions and Answers
What kind of content can CloudFront be used for?
What kind of content can CloudFront be used for?
Which of the following is NOT a benefit of using CloudFront?
Which of the following is NOT a benefit of using CloudFront?
What is an edge location in the context of CloudFront?
What is an edge location in the context of CloudFront?
What is the purpose of Regional Edge Caches in CloudFront?
What is the purpose of Regional Edge Caches in CloudFront?
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Which of the following is a valid origin for CloudFront?
Which of the following is a valid origin for CloudFront?
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What type of SSL certificates can CloudFront support?
What type of SSL certificates can CloudFront support?
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How does CloudFront handle requests for dynamic content?
How does CloudFront handle requests for dynamic content?
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What is the benefit of using Perfect Forward Secrecy in CloudFront?
What is the benefit of using Perfect Forward Secrecy in CloudFront?
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What are the two types of CloudFront distributions?
What are the two types of CloudFront distributions?
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How can you restrict access to content using CloudFront?
How can you restrict access to content using CloudFront?
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What is the default cache behavior of CloudFront?
What is the default cache behavior of CloudFront?
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How long are objects cached by default in CloudFront?
How long are objects cached by default in CloudFront?
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Which of the following is not a method of improving the cache hit ratio?
Which of the following is not a method of improving the cache hit ratio?
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What is the maximum TTL that can be set for CloudFront?
What is the maximum TTL that can be set for CloudFront?
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What is the minimum TTL that can be set for CloudFront?
What is the minimum TTL that can be set for CloudFront?
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Which of the following can be used to restrict access to content in an Amazon S3 bucket?
Which of the following can be used to restrict access to content in an Amazon S3 bucket?
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Which of the following is NOT a feature of CloudFront?
Which of the following is NOT a feature of CloudFront?
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Which of the following is true about Amazon S3 static websites?
Which of the following is true about Amazon S3 static websites?
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What is the 'Total error rate' metric in CloudFront?
What is the 'Total error rate' metric in CloudFront?
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What is the difference between the 'Error rate by status code' metric and the 'Total error rate' metric?
What is the difference between the 'Error rate by status code' metric and the 'Total error rate' metric?
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Which of the following requests are NOT considered cacheable in CloudFront?
Which of the following requests are NOT considered cacheable in CloudFront?
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Which of the following metrics can be enabled for an additional cost?
Which of the following metrics can be enabled for an additional cost?
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What is 'Origin latency' in CloudFront?
What is 'Origin latency' in CloudFront?
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Which of the following services can be used to analyze S3 access logs?
Which of the following services can be used to analyze S3 access logs?
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How can you view CloudFront requests in CloudTrail logs?
How can you view CloudFront requests in CloudTrail logs?
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What is the pricing model for CloudFront's reserved capacity?
What is the pricing model for CloudFront's reserved capacity?
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What is the primary function of an Origin Access Identity (OAI) in CloudFront?
What is the primary function of an Origin Access Identity (OAI) in CloudFront?
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How does Lambda@Edge function in the context of CloudFront?
How does Lambda@Edge function in the context of CloudFront?
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Which of the following statements is TRUE about CloudFront's security features?
Which of the following statements is TRUE about CloudFront's security features?
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When would you use signed URLs in CloudFront?
When would you use signed URLs in CloudFront?
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What is the purpose of a custom error page in CloudFront?
What is the purpose of a custom error page in CloudFront?
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What is the primary advantage of using origin failover in CloudFront?
What is the primary advantage of using origin failover in CloudFront?
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Which of the following statements is TRUE about CloudFront's monitoring and reporting capabilities?
Which of the following statements is TRUE about CloudFront's monitoring and reporting capabilities?
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How can you control access to content based on specific conditions using CloudFront?
How can you control access to content based on specific conditions using CloudFront?
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What is the primary benefit of caching content at CloudFront's edge locations?
What is the primary benefit of caching content at CloudFront's edge locations?
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Which of the following is NOT a recommended practice for using CloudFront?
Which of the following is NOT a recommended practice for using CloudFront?
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What does CloudFront use to route requests to the nearest edge location?
What does CloudFront use to route requests to the nearest edge location?
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Which of these is NOT a valid origin for CloudFront?
Which of these is NOT a valid origin for CloudFront?
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What is the purpose of Regional Edge Caches in CloudFront?
What is the purpose of Regional Edge Caches in CloudFront?
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Which of the following statements is TRUE about Regional Edge Caches?
Which of the following statements is TRUE about Regional Edge Caches?
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Which of the following statements is TRUE about CloudFront's Perfect Forward Secrecy?
Which of the following statements is TRUE about CloudFront's Perfect Forward Secrecy?
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What is the primary benefit of using a wildcard CNAME for CloudFront?
What is the primary benefit of using a wildcard CNAME for CloudFront?
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Which of the following is a feature supported by CloudFront?
Which of the following is a feature supported by CloudFront?
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Which of the following is TRUE about CloudFront's edge locations?
Which of the following is TRUE about CloudFront's edge locations?
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Which of the following is a valid use case for CloudFront's Regional Edge Caches?
Which of the following is a valid use case for CloudFront's Regional Edge Caches?
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Which of the following statements is TRUE about CloudFront's support for wildcard SSL certificates?
Which of the following statements is TRUE about CloudFront's support for wildcard SSL certificates?
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What must you specify when using an on-premises web server as a custom origin for CloudFront?
What must you specify when using an on-premises web server as a custom origin for CloudFront?
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What is the minimum expiration time that can be set for objects cached in CloudFront?
What is the minimum expiration time that can be set for objects cached in CloudFront?
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Which type of distribution should be created for CloudFront live streaming?
Which type of distribution should be created for CloudFront live streaming?
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What is required before you can delete a CloudFront distribution?
What is required before you can delete a CloudFront distribution?
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How can you immediately revoke cached objects in CloudFront?
How can you immediately revoke cached objects in CloudFront?
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Which of the following methods can improve the cache hit ratio in CloudFront?
Which of the following methods can improve the cache hit ratio in CloudFront?
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What is a key characteristic of an Origin Access Identity (OAI) in CloudFront?
What is a key characteristic of an Origin Access Identity (OAI) in CloudFront?
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What type of logs can S3 buckets generate when configured with CloudFront?
What type of logs can S3 buckets generate when configured with CloudFront?
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What should be done to ensure CloudFront requests are logged in CloudTrail?
What should be done to ensure CloudFront requests are logged in CloudTrail?
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Which statement is true regarding the caching of dynamic content in CloudFront?
Which statement is true regarding the caching of dynamic content in CloudFront?
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What does Lambda@Edge allow you to adjust in CloudFront?
What does Lambda@Edge allow you to adjust in CloudFront?
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What role does an Origin Access Identity (OAI) play when used with CloudFront?
What role does an Origin Access Identity (OAI) play when used with CloudFront?
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When should signed cookies be preferred over signed URLs?
When should signed cookies be preferred over signed URLs?
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Which of the following correctly describes AWS WAF's functionality?
Which of the following correctly describes AWS WAF's functionality?
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For high availability in CloudFront, what must you configure?
For high availability in CloudFront, what must you configure?
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Which of the following is a characteristic of signed URLs?
Which of the following is a characteristic of signed URLs?
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What is an important requirement when creating a web access control list (web ACL) for CloudFront?
What is an important requirement when creating a web access control list (web ACL) for CloudFront?
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What is a benefit of using CloudFront's caching at edge locations?
What is a benefit of using CloudFront's caching at edge locations?
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Which of the following is NOT typically included in the default CloudFront operational metrics?
Which of the following is NOT typically included in the default CloudFront operational metrics?
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What should be avoided to maintain PCI DSS compliance with CloudFront?
What should be avoided to maintain PCI DSS compliance with CloudFront?
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What is the definition of 'Total error rate' in CloudFront?
What is the definition of 'Total error rate' in CloudFront?
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Which of the following HTTP status codes is NOT included in the 'Error rate by status code' metric?
Which of the following HTTP status codes is NOT included in the 'Error rate by status code' metric?
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Which of the following is NOT a component of CloudFront's pricing model?
Which of the following is NOT a component of CloudFront's pricing model?
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What does 'Origin latency' measure in CloudFront?
What does 'Origin latency' measure in CloudFront?
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Which of the following is NOT a feature of CloudFront's logging and auditing capabilities?
Which of the following is NOT a feature of CloudFront's logging and auditing capabilities?
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Which of the following statements is TRUE regarding additional metrics in CloudFront?
Which of the following statements is TRUE regarding additional metrics in CloudFront?
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Which of the following requests is considered cacheable in CloudFront?
Which of the following requests is considered cacheable in CloudFront?
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What is the primary purpose of Amazon Athena in the context of CloudFront?
What is the primary purpose of Amazon Athena in the context of CloudFront?
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How can you ensure that CloudTrail captures CloudFront requests in its logs?
How can you ensure that CloudTrail captures CloudFront requests in its logs?
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What is a primary benefit of using reserved capacity for CloudFront data transfer?
What is a primary benefit of using reserved capacity for CloudFront data transfer?
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What is the primary advantage of using CloudFront for content distribution?
What is the primary advantage of using CloudFront for content distribution?
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What is the purpose of an origin in CloudFront?
What is the purpose of an origin in CloudFront?
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What type of requests bypass Regional Edge Caches in CloudFront?
What type of requests bypass Regional Edge Caches in CloudFront?
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What is a characteristic of Edge Locations in CloudFront?
What is a characteristic of Edge Locations in CloudFront?
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What is a benefit of using Regional Edge Caches in CloudFront?
What is a benefit of using Regional Edge Caches in CloudFront?
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What is supported by CloudFront for SSL certificates?
What is supported by CloudFront for SSL certificates?
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What is a feature of CloudFront that allows for edge delivery of static content?
What is a feature of CloudFront that allows for edge delivery of static content?
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What is the result of using Perfect Forward Secrecy in CloudFront?
What is the result of using Perfect Forward Secrecy in CloudFront?
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What can be used as an origin for CloudFront?
What can be used as an origin for CloudFront?
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What is a benefit of using a wildcard CNAME in CloudFront?
What is a benefit of using a wildcard CNAME in CloudFront?
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What is the default cache behavior path pattern for CloudFront?
What is the default cache behavior path pattern for CloudFront?
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What is the minimum TTL that can be set for objects cached in CloudFront?
What is the minimum TTL that can be set for objects cached in CloudFront?
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What is the primary purpose of an Origin Access Identity (OAI) in CloudFront?
What is the primary purpose of an Origin Access Identity (OAI) in CloudFront?
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Which of the following methods can be used to restrict access to content in CloudFront?
Which of the following methods can be used to restrict access to content in CloudFront?
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Which of the following services can be used to analyze S3 access logs?
Which of the following services can be used to analyze S3 access logs?
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What is the default cache behavior for CloudFront?
What is the default cache behavior for CloudFront?
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What is the primary benefit of using a wildcard CNAME for CloudFront?
What is the primary benefit of using a wildcard CNAME for CloudFront?
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What is the purpose of Lambda@Edge in CloudFront?
What is the purpose of Lambda@Edge in CloudFront?
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How can you improve the cache hit ratio in CloudFront?
How can you improve the cache hit ratio in CloudFront?
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Which of the following is a valid use case for CloudFront's signed URLs?
Which of the following is a valid use case for CloudFront's signed URLs?
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What is the maximum TTL that can be set for objects cached in CloudFront?
What is the maximum TTL that can be set for objects cached in CloudFront?
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What is the primary function of an Origin Access Identity (OAI) in CloudFront?
What is the primary function of an Origin Access Identity (OAI) in CloudFront?
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Which of these statements accurately describes how CloudFront's domain names are typically structured?
Which of these statements accurately describes how CloudFront's domain names are typically structured?
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What is the primary purpose of CloudFront's Regional Edge Caches?
What is the primary purpose of CloudFront's Regional Edge Caches?
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In the context of CloudFront, what is the purpose of a cache behavior?
In the context of CloudFront, what is the purpose of a cache behavior?
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How can you use Lambda@Edge to improve the performance of your CloudFront distribution?
How can you use Lambda@Edge to improve the performance of your CloudFront distribution?
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Which of the following statements is TRUE about CloudFront's integration with AWS WAF?
Which of the following statements is TRUE about CloudFront's integration with AWS WAF?
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What is the main purpose of the 'Bytes uploaded' metric in CloudFront?
What is the main purpose of the 'Bytes uploaded' metric in CloudFront?
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Which of the following is a recommended practice for using CloudFront?
Which of the following is a recommended practice for using CloudFront?
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What is the primary benefit of using origin failover in CloudFront?
What is the primary benefit of using origin failover in CloudFront?
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What is the definition of the 4xx error rate?
What is the definition of the 4xx error rate?
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How is the total error rate calculated?
How is the total error rate calculated?
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Which requests are considered cacheable in CloudFront?
Which requests are considered cacheable in CloudFront?
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What does 'origin latency' refer to in CloudFront?
What does 'origin latency' refer to in CloudFront?
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Which of the following statements about logging in S3 buckets is true?
Which of the following statements about logging in S3 buckets is true?
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How can CloudTrail assist with logging in relation to CloudFront?
How can CloudTrail assist with logging in relation to CloudFront?
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What are the available error codes tracked by the 'error rate by status code' metric?
What are the available error codes tracked by the 'error rate by status code' metric?
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Which metric must be enabled for each CloudFront distribution for an additional cost?
Which metric must be enabled for each CloudFront distribution for an additional cost?
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What is the primary function of reserved capacity in CloudFront?
What is the primary function of reserved capacity in CloudFront?
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What is the significance of updating a CloudTrail trail to include global services?
What is the significance of updating a CloudTrail trail to include global services?
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Study Notes
Overview of Amazon CloudFront
- CloudFront is a web service for distributing content quickly and efficiently with low latency.
- Suitable for static content like images, videos, and software downloads, as well as dynamic and interactive content.
- Global service with automatic routing to the nearest edge location.
Edge Locations and Caching
- Edge locations cache content independently of AWS regions and Availability Zones.
- Requests are routed to the closest edge location for optimal performance.
- Regional Edge Caches act as larger caches situated between origin servers and edge locations, prolonging cache retention time.
- Dynamic content is fetched directly from the origin, bypassing regional edge caches.
Origins
- Origins are sources of content to be distributed, including Amazon S3, EC2 instances, and external servers.
- Amazon S3 buckets must be private by default, but access control allows objects to be publicly available or restrict access using signed URLs.
- Custom origins can be on-premises or non-AWS servers, requiring configuration of DNS names, ports, and protocols.
Distributions
- Distributions are required to deliver content via CloudFront and include various configurations.
- Two main types of distributions: Web Distribution for live streaming and media delivery.
- S3 buckets can log requests for analysis using Amazon Athena and are integrated with CloudTrail for tracking.
Cache Behavior and Management
- Cache behavior settings define functionalities for specific URL path patterns, allowing customization of caching rules.
- Objects have a default Time to Live (TTL) of 24 hours, with manual adjustment and invalidation options available.
- A good cache hit ratio maximizes efficiency and reduces load on origin servers.
Security Features
- Origin Access Identity (OAI) restricts direct access to S3 buckets, ensuring content is accessed via CloudFront.
- AWS WAF shields content access based on conditions in web access control lists, delivering custom error pages when needed.
- Security compliance includes PCI DSS and HIPAA, with recommendations against caching sensitive data.
Domain Management
- CloudFront generates domain names like a232323.cloudfront.net, with options for alternate domain names using Route 53 or CNAME records.
- Origin failover ensures high availability, requiring at least two origins for seamless content delivery.
Monitoring and Metrics
- Operational metrics in the CloudFront console include requests, bytes downloaded/uploaded, error rates, and cache hit ratio.
- Enhanced metrics such as origin latency and specific error rates require separate enabling and incur additional costs.
Logging and Auditing
- Access logs and cookie logs generated in S3 buckets can be analyzed with Amazon Athena.
- Integration with CloudTrail allows tracking of all requests to determine access patterns and user actions.
Cost Structure
- Charges based on data transfer, with options for reserved capacity.
- Cost-effective pricing for high data usage while not incurring fees for certain configurations or metrics.
Overview of Amazon CloudFront
- CloudFront is a web service for distributing content quickly and efficiently with low latency.
- Suitable for static content like images, videos, and software downloads, as well as dynamic and interactive content.
- Global service with automatic routing to the nearest edge location.
Edge Locations and Caching
- Edge locations cache content independently of AWS regions and Availability Zones.
- Requests are routed to the closest edge location for optimal performance.
- Regional Edge Caches act as larger caches situated between origin servers and edge locations, prolonging cache retention time.
- Dynamic content is fetched directly from the origin, bypassing regional edge caches.
Origins
- Origins are sources of content to be distributed, including Amazon S3, EC2 instances, and external servers.
- Amazon S3 buckets must be private by default, but access control allows objects to be publicly available or restrict access using signed URLs.
- Custom origins can be on-premises or non-AWS servers, requiring configuration of DNS names, ports, and protocols.
Distributions
- Distributions are required to deliver content via CloudFront and include various configurations.
- Two main types of distributions: Web Distribution for live streaming and media delivery.
- S3 buckets can log requests for analysis using Amazon Athena and are integrated with CloudTrail for tracking.
Cache Behavior and Management
- Cache behavior settings define functionalities for specific URL path patterns, allowing customization of caching rules.
- Objects have a default Time to Live (TTL) of 24 hours, with manual adjustment and invalidation options available.
- A good cache hit ratio maximizes efficiency and reduces load on origin servers.
Security Features
- Origin Access Identity (OAI) restricts direct access to S3 buckets, ensuring content is accessed via CloudFront.
- AWS WAF shields content access based on conditions in web access control lists, delivering custom error pages when needed.
- Security compliance includes PCI DSS and HIPAA, with recommendations against caching sensitive data.
Domain Management
- CloudFront generates domain names like a232323.cloudfront.net, with options for alternate domain names using Route 53 or CNAME records.
- Origin failover ensures high availability, requiring at least two origins for seamless content delivery.
Monitoring and Metrics
- Operational metrics in the CloudFront console include requests, bytes downloaded/uploaded, error rates, and cache hit ratio.
- Enhanced metrics such as origin latency and specific error rates require separate enabling and incur additional costs.
Logging and Auditing
- Access logs and cookie logs generated in S3 buckets can be analyzed with Amazon Athena.
- Integration with CloudTrail allows tracking of all requests to determine access patterns and user actions.
Cost Structure
- Charges based on data transfer, with options for reserved capacity.
- Cost-effective pricing for high data usage while not incurring fees for certain configurations or metrics.
Overview of Amazon CloudFront
- CloudFront is a web service for distributing content quickly and efficiently with low latency.
- Suitable for static content like images, videos, and software downloads, as well as dynamic and interactive content.
- Global service with automatic routing to the nearest edge location.
Edge Locations and Caching
- Edge locations cache content independently of AWS regions and Availability Zones.
- Requests are routed to the closest edge location for optimal performance.
- Regional Edge Caches act as larger caches situated between origin servers and edge locations, prolonging cache retention time.
- Dynamic content is fetched directly from the origin, bypassing regional edge caches.
Origins
- Origins are sources of content to be distributed, including Amazon S3, EC2 instances, and external servers.
- Amazon S3 buckets must be private by default, but access control allows objects to be publicly available or restrict access using signed URLs.
- Custom origins can be on-premises or non-AWS servers, requiring configuration of DNS names, ports, and protocols.
Distributions
- Distributions are required to deliver content via CloudFront and include various configurations.
- Two main types of distributions: Web Distribution for live streaming and media delivery.
- S3 buckets can log requests for analysis using Amazon Athena and are integrated with CloudTrail for tracking.
Cache Behavior and Management
- Cache behavior settings define functionalities for specific URL path patterns, allowing customization of caching rules.
- Objects have a default Time to Live (TTL) of 24 hours, with manual adjustment and invalidation options available.
- A good cache hit ratio maximizes efficiency and reduces load on origin servers.
Security Features
- Origin Access Identity (OAI) restricts direct access to S3 buckets, ensuring content is accessed via CloudFront.
- AWS WAF shields content access based on conditions in web access control lists, delivering custom error pages when needed.
- Security compliance includes PCI DSS and HIPAA, with recommendations against caching sensitive data.
Domain Management
- CloudFront generates domain names like a232323.cloudfront.net, with options for alternate domain names using Route 53 or CNAME records.
- Origin failover ensures high availability, requiring at least two origins for seamless content delivery.
Monitoring and Metrics
- Operational metrics in the CloudFront console include requests, bytes downloaded/uploaded, error rates, and cache hit ratio.
- Enhanced metrics such as origin latency and specific error rates require separate enabling and incur additional costs.
Logging and Auditing
- Access logs and cookie logs generated in S3 buckets can be analyzed with Amazon Athena.
- Integration with CloudTrail allows tracking of all requests to determine access patterns and user actions.
Cost Structure
- Charges based on data transfer, with options for reserved capacity.
- Cost-effective pricing for high data usage while not incurring fees for certain configurations or metrics.
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Description
Learn about Amazon CloudFront, a web service that enables fast and efficient content distribution with low latency, suitable for various types of content.