Network Load Balancer The AWS network load balancer (NLB) is used for very high-performance use cases and operates at the network layer, layer 4, of the OSI model. The service has a lengthy list of features, as illustrated in Figure 1.15. The NLB can handle millions of connections per second and is used in very demanding […]

Distinguishing between object tags and object metadata Let’s compare these two terms: Important note Metadata names are case-insensitive, whereas tag names are case-sensitive. In the next section, you are going to learn about controlling access to buckets and objects on Amazon S3 through different policies, including the resource policy and the identity policy. Controlling access […]

Percentiles Percentiles are available for some AWS services. They enable you to understand where in a particular percentile of the service a specific dimension lies. This information allows you to find outliers and use the data in long-term statistical analysis. CloudWatch Alarms As we already mentioned, the CloudWatch service enables you to trigger alerts when […]

Six Benefits of the AWS Cloud This section covers the following official AWS Certified SysOps Administrator – Associate (SOA-C02) exam domains: Domain 1: Monitoring, Logging, and Remediation Domain 2: Reliability and Business Continuity Domain 3: Deployment, Provisioning, and Automation Domain 6: Cost and Performance Optimization CramSaver If you can correctly answer these questions before going […]

Document Databases A document database is a non-relational (or NoSQL) database that allows you to store documents and data in the JSON-type format and query that data. One of the truly unique features of document databases is that there is no fixed schema and that they can have documents nested inside of each other. AWS […]

Namespaces and Dimensions All data in CloudWatch is recorded with a specific namespace format. Default metrics are formatted as Service:Metric. For example, the CPU Utilization for the EC2 instances is represented by the following namespace: EC2:CPUUtilization. Dimensions are key:value pairs assigned to metrics to allow for a more granular analysis of those metrics within a […]

Creating buckets to hold data Now, you will see how to create a bucket, upload an object, and read the object using the AWS CLI: $ pwd/Users/baba/AWS-Certified-Machine-Learning-Specialty-2020-Certification-Guide/Chapter-5/s3demo/demo-files$ aws s3 ls $ aws s3 mb s3://demo-bucket-baba –region us-east-1make_bucket: demo-bucket-baba$ aws s3 ls2020-11-04 14:39:50 demo-bucket-baba $ aws s3 cp sample-file.txt s3://demo-bucket-baba/upload: ./sample-file.txt to s3://demo-bucket-baba/sample-file.txt Figure 2.2 – […]

Reviewing AWS Directory Service AWS Directory Service offers several choices for organizations to deploy existing applications on AWS that rely on Microsoft AD or Lightweight Directory Access Protocol (LDAP). This is the native AWS service to use when you need a directory to manage users, groups, devices, and access. AWS Directory Service proposes different options […]

Gateway Load Balancers Gateway load balancers are used with virtual network appliances at the network layer 3 of the OSI model. The listener uses a transparent network gateway to distribute traffic across networking devices such as intrusion detection/prevention systems, firewalls, compliance validation, policy enforcement, and deep packet inspection appliances. On-demand scaling allows for the dynamic […]

Security Considerations for RDS Having gone through the RDS service and its capabilities, you can now examine some of the security considerations and best practices for RDS: Amazon Aurora Amazon Aurora was built in response to customers wanting the performance of commercial-grade database engines such as Oracle or Microsoft SQL Server without dealing with all […]