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• Sidecarless architecture removes the need for injection and containers, reducing resource overhead and complexity.
• The use of ebpf technology allows for customization of the Linux kernel to improve reliability.
• The focus should be on making service mesh infrastructure boring and reliable, rejecting new and shiny features.
• Z-tunnel is not replacing Envoy, but rather providing an optional waypoint proxy for service counter namespace basis.
• The goal is to make service mesh infrastructure critical infrastructure that can be depended on.

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• Development teams have been building their own cloud platforms for the past 4-5 years resulting in many similar platforms with some differences in details
• Increased need for network features external to people such as web application firewalls and DDOS protection led to the establishment of a platform team to build a common Kubernetes platform
• The main principle is to reduce developer cognitive load and provide a paved path for running applications in the cloud
• The team aims to use the Kubernetes API for everything and expose it with some kind of abstraction on top
• The team is building a custom Kubernetes controller from scratch using a cube builder and implementing the Gateway API for network configuration
• The Gateway API is a networking model that consists of several Kubernetes resources making it more flexible and role-oriented
• The team plans to use the Gateway API in production by the end of the year

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• Sidecars have advantages in resource consumption, maintenance, and security compared to multi-tenant proxies
• Popular beliefs about sidecars wasting resources and introducing extra latency are not entirely true
• The speaker suggests exploring the use of ebpf in cloud native networking

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• Cardinality and data retention are important aspects to consider in multi-cluster observability
• Metrics can be fetched from running services like Prometheus, but data retention costs can add up quickly
• Differentiating between clusters and applications is important for effective dashboarding
• The presentation focuses on Istio, Prometheus, and Thanos as key projects for multi-cluster observability
• The demo showcases the installation process for Istio and the creation of certificates for secure communication between clusters

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• The Gateway API features are not specific to Ingress traffic and can be used for all Kubernetes traffic.
• The Gamma Initiative was formed to create a unified API for traffic going both in and out of the cluster and across different services.
• The goal is to have a unified API across vendors of meshes and between Ingress and mesh.
• The initiative has weekly meetings and resources available for those who want to get involved.
• The first big milestone for the project is the support for defining how HTTP traffic works in a service mesh.
• The Gamma Initiative aims to make Kubernetes easier for everyone to use.

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• Continuous deployment and release in microservices
• Importance of testing in context
• Flagger as a sophisticated way of doing a rolling update

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• Service mesh can be used for initial metadata requests in Kafka, but subsequent requests should go directly to specific brokers
• TCP observability is limited in service mesh, so TCP dump and Wireshark can be used for packet captures
• Ephemeral containers can be used to share network namespaces and run debugging tools like TCP dump
• The speaker suggests integrating ephemeral containers into other open source tools like CaseNIc and using them for remote captures on pods

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• Linkerd is a service mesh for Kubernetes that provides observability, reliability, and security
• It has a growing set of features including policy, circuit breaking, and header-based routing
• The project has a large and active community
• Linguity is a new extension that manages or installs the SMI CRDs and other SMI functionality
• Linkerd is working on supporting FIPS 140-2 compliance systems
• The project has graduated from the CNCF
• Linkerd is a popular choice for those who want to improve their observability, reliability, and security in their Kubernetes clusters