How deeply does Google Anthos in Action cover traffic splitting?

Explains percentage- and rule-based routing, progressive migration, and fault simulation but does not provide configuration syntax.

Traffic splitting

As explained in Google Anthos in Action

Traffic splitting is the controlled distribution of requests among service versions or destinations according to configured proportions or rules.

Traffic splitting distributes requests among multiple versions of a microservice according to configured percentages or rules. Istio and Anthos Service Mesh apply these controls through the service mesh, without changes to application code. section 4.3.2 section 4.2

Use traffic splitting to manage service changes operationally:

Redirect a small, controlled share of requests to a new version, validate its behavior, and progressively increase its traffic. section 4.5.3
Keep old and new versions active simultaneously when rules require different users or cases to reach different implementations. section 4.5.3
Support A/B testing, canary deployments, progressive rollouts, bug fixes, and releases without downtime. section 4.5.3 section 4.6

Progressive fix rollout

After deploying an urgent fix, route a small percentage of incoming requests to the new version. Verify that the fix works, increase its share, and eventually direct all traffic to it; retain both versions when only selected cases need the fix. section 4.5.3

Table 4.1 Istio traffic management features (view table figure)

Feature	Description
Ingress	Controls the ingress traffic for the service mesh, to expose a service outside the service mesh over TLS or mTLS using the Istio gateway. In another chapter, we will deep-dive into ingress for Anthos.
Egress	Controls the egress traffic from the service mesh, routes traffic to an external system, performs TLS for outbound traffic, and configures the outbound gateway to use an HTTPS proxy.
Request routing and traffic splitting	Dynamically routes the traffic to multiple versions of the microservice or migrates traffic from one version to another version gradually and in a controlled way.
Fault injection	Provides configurable HTTP delays and fault injection with an HTTP status code, allowing developers to discover problems before they would occur in production.

Compare traffic splitting with related Istio controls for ingress, egress, request routing, and fault injection. section 4.3.2

How Google Anthos in Action covers it

liveBook manning.com

Read Google Anthos in Action on liveBook Get the book at manning.com

Also explained in

liveBook manning.com

Platform Engineering on KubernetesPercentage-based traffic splitting distributes requests among application versions according to configured traffic percentages.

Compare how 2 books explain traffic splitting →

Related concepts

blue-green deploymentcontrasts with · Blue-green deployment is a release pattern that maintains separate active and replacement environments and switches traffic between them after the replacement is validated.
weightconfigured by · A weight is a numerical quantity assigned to an element to represent its contribution, influence, importance, strength, or resource amount in a calculation or system.
study designuses · Study design is the planned arrangement of procedures, conditions, measurements, and comparisons used to investigate a question and support valid conclusions.
Knative Serviceuses · A Knative Service is a Kubernetes resource that defines and manages a serverless application’s deployment, revisions, traffic routing, and autoscaling.
canary deploymentuses · A canary deployment is a release strategy that exposes a change to a limited portion of users, traffic, or infrastructure before expanding it more broadly.
service meshused by · A service mesh is an infrastructure layer that manages communication and cross-cutting concerns such as traffic control, security, and observability between distributed services.

This explainer was generated by Manning's knowledge graph from the text of Google Anthos in Action. The section links point to the parts of the book it draws on.