Javascript / Node.js Using Selenium ChromeDriver in Docker / Kubernetes Containers With Node.js How to configure a Dockerfile for Chrome / Selenium and use it in Node.js code. This sample includes support for downloading files through Chrome.
Kubernetes Ghost Blog / CMS on Azure Kubernetes Service (AKS) How to configure and run Ghost Blog/CMS on Azure Kubernetes Service (AKS)
Kubernetes 8GB Azure Kubernetes Node Server for $1 / month Azure Virtual Nodes have allowed us to scale while reducing cost and response time.
Databases Indexed Queries of Nested Object Arrays in ArangoDB ArangoDB supports indexed nested object arrays, but without some planning and profiling, it may not use your indices.
Javascript / Node.js Smarter Async Batching in Javascript / Node.js A comparison of For Loop vs Promise.all with Array.map vs Async-Batch
Kubernetes Schedule Azure Kubernetes Service (AKS) Node Security Patches with Kured How to install the current version of Weaveworks Kured.
Databases Configuring PostgreSQL Backups Using pg_dump and AzCopy A good backup strategy is essential to any database. Recently, we implemented a simple PostgreSQL backup using pg_dump and AzCopy on Ubuntu 18.
Databases Self Hosting PostgreSQL 12.x on Azure AWS RDS and Azure Database for PostgreSQL are excellent offerings, but can quickly escalate in price as databases grow. Hosting Postgres on VMs takes effort, but may be a valuable cost-saving alternative with greater flexibility to customize the database.
Databases Relational Query With Joins Performance in PostgreSQL vs ArangoDB ArangoDB outperformed Postgres in our relational join tests by an order of magnitude
DevOps How to Resize an Azure VM Spot Instance While it may seem straightforward, there isn't currently a way to update an Azure Spot Instance VM size in the Azure Portal.
DevOps How to Convert Your Azure VM to Spot Instances and Save ~80% Microsoft Azure now has Spot Instances in Preview. These are effectively the same as the AWS Spot Instances on EC2. The provide an excellent way to reduce costs for non-mission critical processes.
DevOps Accessing IP Restricted Azure Databases from CircleCI CircleCI is a simple, yet powerful Continuous Integration platform, but it doesn't provide any guarantees or even tight ranges on outbound traffic IP addresses.
Databases Installing PostgreSQL 12 on Ubuntu Postgres is an excellent database, but, as of now, version 12 is two months old and the Installation Instructions are still based on Postgres 11.
Kubernetes Resolution to Kubernetes Cluster DNS and Routing Failures After Azure AKS Upgrade After upgrading an AKS cluster with Virtual Nodes, you need to disable and re-enable the Virtual Nodes Add-On for inter-cluster communication.
Kubernetes Virtual Pods Not Assigned Cluster IP Addresses after Azure Kubernetes Service (AKS) Upgrade Despite being optional in Kubernetes, the Deployment containerPort is required for AKS Virtual Node Deployments. Barbara Liskov's famed "Liskov Substitution Principle" (LSP) violated once again...
DevOps 2GB Extra For Free on Azure VMs Have you ever noticed that your Azure VM has a 30GB OS disk. Azure defaults the OS disk to 30GB, but if you look at the Managed Disk Pricing, the minimum size you are charged for is 32GB.
