Category: DevOps
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Amazon EKS: Setup aws-load-balancer-controller for Kubernetes Ingress
Category: DevOps, Web Development
AWS Load Balancer Controller replaces the functionality of the AWS ALB Ingress Controller.
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Amazon EKS: Setup kubernetes-external-secrets with AWS Secret Manager
Category: DevOps, Web Development
kubernetes-external-secrets allows you to use external secret management systems, like AWS Secrets Manager, to securely add Secrets in Kubernetes, so Pods can access Secrets normally.
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Amazon EKS: Manage Kubernetes Cluster with ClusterConfig (2025 Version)
Category: DevOps, Web Development
Amazon Elastic Kubernetes Service (Amazon EKS) is a managed Kubernetes as a Service on AWS. IMAO, Google Cloud's GKE is still the best choice for managed Kubernetes service if you're not stuck in AWS.
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Fix "No Access-Control-Allow-Origin header" for S3 and CloudFront
Category: DevOps, Web Development
To avoid the error "No 'Access-Control-Allow-Origin' header is present on the requested resource"
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How HTTPS Works in Layman's Terms - TLS 1.2 and 1.3
Category: DevOps, Web Development
TLS actually uses both Asymmetric Encryption and Symmetric Encryption, so-called a hybrid cryptosystem. Simply speaking, TLS first uses an Asymmetric algorithm to exchange shared secrets between both sides, then generates a Symmetric key (the session key) from the shared secrets, finally uses the session key to encrypt application data (HTTP request/response).
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The Incomplete Guide to Google Kubernetes Engine
Category: DevOps, Web Development
Kubernetes is the de facto standard of container orchestration. Google Kubernetes Engine (GKE) is a managed Kubernetes as a Service provided by Google Cloud Platform.
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sysctl: Linux System Tweaking
Category: DevOps, Web Development
sysctl is a command-lin tool to modify kernel parameters at runtime in Linux.
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Setup Scalable WordPress Sites on Kubernetes
Category: DevOps, Web Development
This article is about how to deploy a scalable WordPress site on Google Kubernetes Engine.
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mitmproxy: proxy any network traffic through your local machine
Category: DevOps, Python, Web Development
mitmproxy is a free and open source interactive HTTPS proxy.
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MongoDB operations: Replica Set
A replica set is a group of servers that maintain the same data set, with one primary which takes client requests, and multiple secondaries that keep copies of the primary's data. If the primary crashes, secondaries can elect a new primary from amongst themselves.