Deploying API implementations to CloudHub11% of the exam
Shared and Dedicated Load Balancers
Select classic CloudHub entry services by certificate, routing and rate requirements, then account for DLB DNS transitions, buffering and administration.
Identify the defining differences between the CloudHub Shared and Dedicated Load Balancers.
~7 min read · 5 practice questions
What the exam expects
- Choose shared or dedicated load balancing for the required HTTP/HTTPS configuration.
- Trace which endpoint presents which certificate.
- Distinguish upstream rate limits, DNS transitions and response buffering from worker capacity.
- Review the administration and capacity of a dedicated load balancer separately from application workers.
A shared load balancer supplies the platform's basic entry service; a DLB is a configurable dedicated load balancer inside an Anypoint VPC; a proxy rule maps public domains to applications; DNS TTL bounds cached name information; proxy buffering temporarily holds a backend response (Load balancers, DLBs). These are classic CloudHub components.
Sources for this section (2)
Key facts
Shared configuration
- Detail
- Custom certificates and proxy rules are unavailable.
Dedicated prerequisite
- Detail
- Create an Anypoint VPC before using a DLB.
Certificate path
- Detail
- Shared service uses its own certificate; direct access uses the application's.
Regional rate limits
- Detail
- Shared thresholds can differ between regions; excess requests receive 429.
Address transition
- Detail
- Restart or update switches between static-IP groups.
Client behavior
- Detail
- Use DNS, honor TTL and include retries for the switch.
Buffering
- Detail
- Disable for a response with
X-Accel-Buffering: no.
Capacity units
- Detail
- One DLB unit represents two load-balancer workers.
Sources for this section (2)
- Why must a custom header name containing a space be reviewed before blaming forwarding?
- When assigning DLB creation and configuration, which administration scope is required?
- Why must a DLB licensing unit be distinguished from one load-balancer worker?
The questions are free to read. Answers with their sources and self-grading are included with the pack.
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