How to add a new hypervisor to CloudStack - Lessons learned from Hyper-V effort

This presentation is Part 31 of the EWD 3 Training Course. It explains how to use QEWD to support Web and REST services

This is part 34 of the EWD 3 Training Course. This presentation explains how you can add resilience to the message queue used by QEWD by making it save all incoming requests to your embedded Global Storage database. In Resilient Mode, QEWD also saves a copy of all responses sent to clients, so the stored activity information can be used as an audit trail.

AWSKRUG 판교 2019.06.05 Kubernetes Internals (Kubernetes 해부하기) - Understanding Kubernetes Components -- Understanding Kube-APIServer -- Understanding Kube-Scheduler -- Understanding Kube-Controller-Manager -- Understanding Kube-Proxy -- Understanding DNS - Understanding Kubernetes Networking -- Understanding Pod Networking -- Understanding Service Networking

This document describes how to create a REST proxy using QEWD. It involves: 1. Amending the backend restDemo.js module to extract the REST call logic into a separate function and define a 'proxy' handler function. 2. Setting the module to be a REST module. 3. Having the proxy handler function invoke the extracted REST call logic to proxy requests to the actual REST service. 4. Adding a route in the QEWD startup file to route the /api/proxy URL to the proxy handler function, exposing the REST service via the proxy. This allows the module to act as a REST proxy to the external JSONPlaceholder service while still supporting normal interactive apps

This presentation explains the new functionality within QEWD that supports the use of JSON Web Tokens and which allows QEWD.js to provide a powerful yet simple-to-use MicroService architecture

Apache httpd v2.4 is well-suited for cloud environments due to improvements that increase performance, flexibility, and dynamic configuration capabilities. It has been enhanced as a reverse proxy with load balancing and support for additional protocols. Benchmark tests show that for transaction speed, the prefork MPM performs best, though other MPMs are on par for concurrency. Apache remains a robust and customizable web server option.

The document describes the distributed queuing system used to process tasks in Instances' control plane. Messages from APIs are routed through RabbitMQ exchanges and bindings to Celery worker queues. This allows scaling components independently and processing tasks asynchronously. Key-value headers and routing rules ensure messages are routed to the correct queues and workers.

This is part 43 of the EWD 3 Training Course. In this presentation, you'll learn how to use JSON Web Tokens (JWTs) instead of server-side QEWD Sessions in your REST Services

This presentation is Part 16 of the EWD 3 Training Course. It describes and explains QEWD Services and shows you how to use them to create re-usable back-end message handlers.