Aggregation – Defining and Calculating Metrics As already mentioned, several AWS services provide service-specific metrics in CloudWatch out of the box. For others, for instance, VPC Flow Logs, you’ll have to define metrics yourself by extracting data directly from the logs in CloudWatch. You do that by creating a metric filter that will look for […]

TLS Passthrough TLS passthrough is the more traditional design for load balancers that do not process SSL/TLS traffic on port 443. The load balancer does not have any digital certificates locally installed and just passes all encrypted traffic to the backend servers for them to perform the encryption and decryption functions, as shown in Figure […]

Accessing VPC Flow Logs for Reading After you have enabled VPC Flow Logs, the next step is to figure out how you will access them to take advantage of the data that has been collected. You can access your logs via the AWS Management Console. Since the logs will be stored in S3, you can […]

Working with classification models You have been learning what classification models are throughout this book. However, now, you are going to look at some algorithms that are suitable for classification problems. Keep in mind that there are hundreds of classification algorithms out there, but since you are preparing for the AWS Certified Machine Learning Specialty […]

Rollups A rollup is a collection of hot fixes. In some cases, the rollup might contain more than just security updates, but the main focus is to address a collection of security or critical issues with a single update. Patching Cloud Components Although many patches are designed to fix an issue with a product, some […]

Schedule-Triggered Flows allow you to automate processes and perform actions on a scheduled basis. Unlike other types of flows that are triggered by user interactions or record changes, schedule-triggered flows are initiated based on a predefined schedule, such as a specific date and time or a recurring interval. They are especially useful for automating repetitive […]

Generation – Monitoring All Components of Your Workload This may sound obvious, but it is essential to monitor all the components of your workload without exception, using either Amazon CloudWatch or third-party solutions if you prefer. From the frontend to the backend and the storage or database layer, you should make sure to collect the […]

Slow Start To prevent a new target from being overwhelmed with connection requests when it is first brought online, there is a slow start feature that allows the server to gradually process new requests after the new target passes its health checking and comes online. This gives the server time to “warm up.” The ELB […]

Why Choose an S3 Bucket over CloudWatch Logs? When enabling your VPC Flow Logs to capture the traffic, you have an immediate choice of where to store the logs. The industry that your organization is in, along with the types of compliance regulations you need to follow, should play a part in this decision. There […]

Regression modeling on AWS AWS has a built-in algorithm known as linear learner, where you can implement linear regression models. The built-in linear learner uses Stochastic Gradient Descent (SGD) to train the model. Important note You will learn more about SGD when neural networks are discussed. For now, you can look at SGD as an […]