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Older notes, lessons, and series entries from the growing technical library.

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2 min readSeries: AWS from Zero · Part 1123

Cost Explorer: Delete anomaly subscription from the CLI

Use the AWS CLI to delete anomaly subscription in Cost Explorer, identify required inputs, and inspect the modeled response.

#aws#cli#cost-explorer#finops#cost
4 min readSeries: LeetCode Notebook

LeetCode #20 - Valid Parentheses, and the stack instinct

A small string problem that teaches the core stack pattern: the most recent opener must be the first one closed.

#leetcode#stack#strings
2 min readSeries: AWS from Zero · Part 1122

Cost Explorer: Delete anomaly monitor from the CLI

Use the AWS CLI to delete anomaly monitor in Cost Explorer, identify required inputs, and inspect the modeled response.

#aws#cli#cost-explorer#finops#cost
3 min readSeries: AWS from Zero · Part 1121

Cost Explorer: Tag resource from the CLI

Use the AWS CLI to tag resource in Cost Explorer, identify required inputs, and inspect the modeled response.

#aws#cli#cost-explorer#finops#cost
2 min readSeries: AWS from Zero · Part 1120

Cost Explorer: Start cost allocation tag backfill from the CLI

Use the AWS CLI to start cost allocation tag backfill in Cost Explorer, identify required inputs, and inspect the modeled response.

#aws#cli#cost-explorer#finops#cost
2 min readSeries: AWS from Zero · Part 1119

Cost Explorer: Start commitment purchase analysis from the CLI

Use the AWS CLI to start commitment purchase analysis in Cost Explorer, identify required inputs, and inspect the modeled response.

#aws#cli#cost-explorer#finops#cost
2 min readSeries: AWS from Zero · Part 1118

Cost Explorer: Update cost allocation tags status from the CLI

Use the AWS CLI to update cost allocation tags status in Cost Explorer, identify required inputs, and inspect the modeled response.

#aws#cli#cost-explorer#finops#cost
2 min readSeries: AWS from Zero · Part 1117

Cost Explorer: Update anomaly subscription from the CLI

Use the AWS CLI to update anomaly subscription in Cost Explorer, identify required inputs, and inspect the modeled response.

#aws#cli#cost-explorer#finops#cost
2 min readSeries: AWS from Zero · Part 1116

Cost Explorer: Update anomaly monitor from the CLI

Use the AWS CLI to update anomaly monitor in Cost Explorer, identify required inputs, and inspect the modeled response.

#aws#cli#cost-explorer#finops#cost
2 min readSeries: AWS from Zero · Part 1115

Cost Explorer: Create cost category definition from the CLI

Use the AWS CLI to create cost category definition in Cost Explorer, identify required inputs, and inspect the modeled response.

#aws#cli#cost-explorer#finops#cost
2 min readSeries: AWS from Zero · Part 1114

Cost Explorer: Create anomaly subscription from the CLI

Use the AWS CLI to create anomaly subscription in Cost Explorer, identify required inputs, and inspect the modeled response.

#aws#cli#cost-explorer#finops#cost
2 min readSeries: AWS from Zero · Part 1113

Cost Explorer: Create anomaly monitor from the CLI

Use the AWS CLI to create anomaly monitor in Cost Explorer, identify required inputs, and inspect the modeled response.

#aws#cli#cost-explorer#finops#cost
2 min readSeries: AWS from Zero · Part 1112

Cost Explorer: Get cost and usage from the CLI

Use the AWS CLI to get cost and usage in Cost Explorer, identify required inputs, and inspect the modeled response.

#aws#cli#cost-explorer#finops#cost
2 min readSeries: AWS from Zero · Part 1111

Cost Explorer: Get commitment purchase analysis from the CLI

Use the AWS CLI to get commitment purchase analysis in Cost Explorer, identify required inputs, and inspect the modeled response.

#aws#cli#cost-explorer#finops#cost
2 min readSeries: AWS from Zero · Part 1110

Cost Explorer: Get approximate usage records from the CLI

Use the AWS CLI to get approximate usage records in Cost Explorer, identify required inputs, and inspect the modeled response.

#aws#cli#cost-explorer#finops#cost
2 min readSeries: AWS from Zero · Part 1109

Cost Explorer: Get anomaly subscriptions from the CLI

Use the AWS CLI to get anomaly subscriptions in Cost Explorer, identify required inputs, and inspect the modeled response.

#aws#cli#cost-explorer#finops#cost
2 min readSeries: AWS from Zero · Part 1108

Cost Explorer: Get anomaly monitors from the CLI

Use the AWS CLI to get anomaly monitors in Cost Explorer, identify required inputs, and inspect the modeled response.

#aws#cli#cost-explorer#finops#cost
2 min readSeries: AWS from Zero · Part 1107

Cost Explorer: Get anomalies from the CLI

Use the AWS CLI to get anomalies in Cost Explorer, identify required inputs, and inspect the modeled response.

#aws#cli#cost-explorer#finops#cost
2 min readSeries: AWS from Zero · Part 1106

Cost Explorer: Describe cost category definition from the CLI

Use the AWS CLI to describe cost category definition in Cost Explorer, identify required inputs, and inspect the modeled response.

#aws#cli#cost-explorer#finops#cost
2 min readSeries: AWS from Zero · Part 1105

AWS Backup: Cancel legal hold from the CLI

Use the AWS CLI to cancel legal hold in AWS Backup, identify required inputs, and inspect the modeled response.

#aws#cli#backup#operations
4 min readSeries: LeetCode Notebook

LeetCode #70 — Climbing Stairs: Fibonacci in disguise

Why 'how many ways' problems are recurrences in disguise — from exponential recursion to my memoized 0ms solution, plus the O(1) two-variable finish.

#leetcode#dynamic-programming#recursion
2 min readSeries: AWS from Zero · Part 1104

AWS Backup: Delete backup vault from the CLI

Use the AWS CLI to delete backup vault in AWS Backup, identify required inputs, and inspect the modeled response.

#aws#cli#backup#operations
2 min readSeries: AWS from Zero · Part 1103

AWS Backup: Delete backup selection from the CLI

Use the AWS CLI to delete backup selection in AWS Backup, identify required inputs, and inspect the modeled response.

#aws#cli#backup#operations
2 min read

How I built this site: 3D, static, and nearly free

The architecture behind dhayalram.com — Next.js static export, React Three Fiber, and S3 + CloudFront for a bill measured in cents.

#aws#nextjs#threejs#serverless
2 min readSeries: AWS from Zero · Part 1102

AWS Backup: Delete backup plan from the CLI

Use the AWS CLI to delete backup plan in AWS Backup, identify required inputs, and inspect the modeled response.

#aws#cli#backup#operations
3 min readSeries: AWS from Zero · Part 1101

AWS Backup: Tag resource from the CLI

Use the AWS CLI to tag resource in AWS Backup, identify required inputs, and inspect the modeled response.

#aws#cli#backup#operations
2 min read

A WordPress-like writing experience with zero servers

How a local-first studio plus Git gives you a daily blogging habit without paying for hosting.

#writing#local-first#ai
3 min readSeries: AWS from Zero · Part 1100

AWS Backup: Start copy job from the CLI

Use the AWS CLI to start copy job in AWS Backup, identify required inputs, and inspect the modeled response.

#aws#cli#backup#operations
2 min readSeries: AWS from Zero · Part 1099

AWS Backup: Start backup job from the CLI

Use the AWS CLI to start backup job in AWS Backup, identify required inputs, and inspect the modeled response.

#aws#cli#backup#operations
1 min read

Hello, world — why I'm writing every day

Kicking off a daily writing habit: what this blog is for and what to expect.

#meta#writing
2 min readSeries: AWS from Zero · Part 1098

AWS Backup: Put backup vault lock configuration from the CLI

Use the AWS CLI to put backup vault lock configuration in AWS Backup, identify required inputs, and inspect the modeled response.

#aws#cli#backup#operations
2 min readSeries: AWS from Zero · Part 1097

AWS Backup: Put backup vault access policy from the CLI

Use the AWS CLI to put backup vault access policy in AWS Backup, identify required inputs, and inspect the modeled response.

#aws#cli#backup#operations
2 min readSeries: Kubernetes from Zero · Part 3

Deployments & Services: self-healing apps with stable addresses

Replicas, rolling updates, rollbacks, and giving your Pods a stable address — the workhorses of everyday Kubernetes.

#kubernetes#devops
3 min readSeries: AWS from Zero · Part 1096

AWS Backup: Associate backup vault mpa approval team from the CLI

Use the AWS CLI to associate backup vault mpa approval team in AWS Backup, identify required inputs, and inspect the modeled response.

#aws#cli#backup#operations
2 min readSeries: AWS from Zero · Part 1095

AWS Backup: Create backup vault from the CLI

Use the AWS CLI to create backup vault in AWS Backup, identify required inputs, and inspect the modeled response.

#aws#cli#backup#operations
2 min readSeries: AWS from Zero · Part 1094

AWS Backup: Create backup selection from the CLI

Use the AWS CLI to create backup selection in AWS Backup, identify required inputs, and inspect the modeled response.

#aws#cli#backup#operations
2 min readSeries: AWS from Zero · Part 1093

AWS Backup: Create backup plan from the CLI

Use the AWS CLI to create backup plan in AWS Backup, identify required inputs, and inspect the modeled response.

#aws#cli#backup#operations
2 min readSeries: Kubernetes from Zero · Part 2

Pods: the atom of Kubernetes

Hands-on with Pods — what they are, why containers share them, and your first kubectl commands.

#kubernetes#devops
2 min readSeries: AWS from Zero · Part 1092

AWS Backup: Describe recovery point from the CLI

Use the AWS CLI to describe recovery point in AWS Backup, identify required inputs, and inspect the modeled response.

#aws#cli#backup#operations
2 min readSeries: AWS from Zero · Part 1091

AWS Backup: Describe protected resource from the CLI

Use the AWS CLI to describe protected resource in AWS Backup, identify required inputs, and inspect the modeled response.

#aws#cli#backup#operations
2 min readSeries: AWS from Zero · Part 1090

AWS Backup: Describe global settings from the CLI

Use the AWS CLI to describe global settings in AWS Backup, identify required inputs, and inspect the modeled response.

#aws#cli#backup#operations
2 min readSeries: AWS from Zero · Part 1089

AWS Backup: Describe framework from the CLI

Use the AWS CLI to describe framework in AWS Backup, identify required inputs, and inspect the modeled response.

#aws#cli#backup#operations
2 min readSeries: Kubernetes from Zero · Part 1

Why Kubernetes exists (and when you actually need it)

Before touching kubectl, understand the problem Kubernetes solves — and whether you even have that problem.

#kubernetes#devops
2 min readSeries: AWS from Zero · Part 1088

AWS Backup: Describe copy job from the CLI

Use the AWS CLI to describe copy job in AWS Backup, identify required inputs, and inspect the modeled response.

#aws#cli#backup#operations
2 min readSeries: AWS from Zero · Part 1087

AWS Backup: Describe backup vault from the CLI

Use the AWS CLI to describe backup vault in AWS Backup, identify required inputs, and inspect the modeled response.

#aws#cli#backup#operations
3 min readSeries: LeetCode NotebookRemix

My remix: Two Sum, but it's 100M numbers and you get 512 MB

I made up my own follow-up: what happens to the hash-map solution when the array doesn't fit in memory? Duplicates, negatives, and external partitioning.

#leetcode#algorithms#memory
2 min readSeries: AWS from Zero · Part 1086

AWS Backup: Describe backup job from the CLI

Use the AWS CLI to describe backup job in AWS Backup, identify required inputs, and inspect the modeled response.

#aws#cli#backup#operations
2 min readSeries: AWS from Zero · Part 1085

CloudFormation: List resource scans from the CLI

Use the AWS CLI to list resource scans in CloudFormation, identify required inputs, and inspect the modeled response.

#aws#cli#cloudformation#automation#infrastructure-as-code