The adoption of Application Delivery Controllers (ADCs) in Kubernetes and containerized environments mitigate the challenges often encountered in these complex environments, such as resource allocation, service reliability, and application security.
In the realm of Kubernetes and microservices, DevOps managers are always seeking effective solutions that not only enhance application delivery for Kubernetes but also reduce operational complexity. Citrix's NetScaler, with its versatile and powerful capabilities, emerges as a robust solution that fits this bill.
The NetScaler Ingress Controller extends the capabilities of the traditional Kubernetes Ingress, providing a powerful interface for managing external access to services within a Kubernetes cluster. This offers DevOps managers an invaluable asset for traffic management. Its capabilities like SSL offload, load balancing, and content switching ensure that application traffic is efficiently handled, improving application performance and reducing the load on your backend servers.
Citrix Ingress Controller watches for changes on the Kubernetes cluster and automatically configures the NetScaler to provide access to the applications deployed as microservices. IPAM delivers the IP address needed, and Citrix Ingress Controller updates the NetScaler entities (services), ensuring users can access the application without interruption.
A service mesh is a dedicated infrastructure layer that tracks, secures, and relays all data flow between services and is usually implemented by deploying network proxies as sidecars in the data plane.
NetScaler's integration with service mesh technologies like Istio and Envoy is a boon for microservices-based architectures. By extending its advanced traffic management and security capabilities to these service mesh technologies, NetScaler offers improved control over microservices communication, contributing to secure and efficient application delivery.
NetScaler ADC CPX/VPX and Citrix Ingress Controller helps you run a service mesh lite architecture, as NetScaler ADCs handle the east-west traffic of your application in the service mesh lite architecture and, as an L7 proxy, can provide features other proxies can’t. This gives you the benefits of service mesh, all while minimizing complexity by using fewer proxies in the deployment.
With the growing need to effectively manage and secure API traffic, NetScaler's function as an API gateway is critical. It supports advanced API management features like rate limiting, authentication, and authorization, enabling DevOps managers to secure API endpoints, control the traffic flow, and protect backend services from misuse or overuse.
In an increasingly distributed world, NetScaler's global server load balancing (GSLB) becomes crucial. This feature allows traffic to be distributed across multiple data centers and cloud regions, enhancing the availability and fault tolerance of your microservices. This is particularly useful for DevOps teams managing applications that need to be deployed across multiple geographic locations for high availability and performance.
The automatic scaling capability of NetScaler is a game-changer. By integrating with the Kubernetes horizontal pod auto-scaler, NetScaler can automatically adjust the number of ADC instances based on demand. This not only helps manage the application traffic efficiently but also optimizes resource usage, contributing to significant cost savings.
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