Registering a Domain with Route 53 You can purchase domains within Route 53 or register domains that have been purchased elsewhere. In Figure 12.2, you can see a domain search being performed in the AWS Management Console. FIGURE 12.2 Registering a domain After the domain is registered, you can configure DNS. In Figure 12.3, you can […]

traceroute traceroute is a useful command-line utility in your troubleshooting arsenal and is used to show the path taken over an IP network from source to destination. It will also tell us the delays to each router hop and, if configured, the DNS name of all the indeterminate routers. The utility is included in every […]

Testing and Validating Connectivity Between Environments Network testing and validation is an important skill for any networking engineer, and in-depth knowledge is expected for you to pass the Advanced Networking exam. Network testing is an ongoing process that begins when you first configure the network. There are many monitoring, logging, and testing tools offered as […]

Important note For production use cases, it is recommended to use AWS Lambda with AWS Step Functions if you have dependent services or a chain of services. Using the same S3 bucket to store input and output objects is not recommended. Output object creation in the same bucket may trigger recursive Lambda invocation. If you […]

Using Amazon Kinesis to Process Logs Amazon Kinesis Firehose is a fully managed service that can scale automatically with the volume of the data throughput that you are sending to it. It can scale automatically if large quantities of data suddenly appear and then scale back down again. Data can be encrypted and sent to […]

Custom objects Custom objects and their custom fields are all created in the Custom Objects/Custom Fields table in the underlying Salesforce database. Custom object data resides within the Salesforce database, and both custom objects and custom fields have a __c suffix. In the example of a SOQL query issued for data held in a custom […]

Initializing Variables Before you can use a variable, it needs a value. Some types of variables get this value set automatically, and others require the programmer to specify it. In the following sections, we look at the differences between the defaults for local, instance, and class variables. Creating Local Variables A local variable is a […]

Navigating through parent-child relationships in SOQL refers to the ability to traverse and query data across related objects in Salesforce using SOQL. Parent-child relationships exist when one object is related to another object, such as a master-detail or lookup relationship. For example, if you have a parent object called “Account” and a child object called […]

Monitoring Performance Part of the overall architecting for performance approach is to monitor how your resources actually perform. The idea is to do it not just once at the beginning, when you lay out your solution design, but continuously, to monitor how your workload performs over time and detect any deviation. First, identify the metrics […]

Comparing Costs of Storing Logs in S3 versus CloudWatch Logs You may think that because you are studying for a test that emphasizes security, the pricing does not matter. However, this is not the case because keeping costs under control is everyone’s responsibility in an organization. The ability to choose the proper storage for the […]