14 Extending Istio on the request path
This chapter covers
- Understanding Envoy filters
- Using Istio’s
EnvoyFilterresource to configure Envoy directly - Using Lua to customize the request path
- Using WebAssembly to customize the request path
As you’ve seen throughout this book, Istio can bring a lot of value to organizations with its application-networking functionality. Organizations adopting Istio will likely have other constraints or assumptions that Istio may not fulfill out of the box. You will likely need to extend Istio’s capabilities to more nicely fit within these constraints.
As we saw in chapter 3, and reinforced throughout the book, the Envoy proxy is a foundational component of the Istio service mesh. Envoy is the service proxy that ...
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