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Rate LimitingRedisDistributed SystemsApi DesignScalabilityCachingPerformanceArchitectureAwsKafkaSqsSqlPostgresqlMysqlQuery OptimizationVpcCloud NetworkingSubnetsNat GatewayGcpAi ToolsProductivityManagementWorkflowClaudeSslSaasCaddyCloudfrontLets EncryptClaude CodeTeam WorkflowDeveloper ExperienceAi CodingRate LimitingRedisDistributed SystemsApi DesignScalabilityCachingPerformanceArchitectureAwsKafkaSqsSqlPostgresqlMysqlQuery OptimizationVpcCloud NetworkingSubnetsNat GatewayGcpAi ToolsProductivityManagementWorkflowClaudeSslSaasCaddyCloudfrontLets EncryptClaude CodeTeam WorkflowDeveloper ExperienceAi CodingRate LimitingRedisDistributed SystemsApi DesignScalabilityCachingPerformanceArchitectureAwsKafkaSqsSqlPostgresqlMysqlQuery OptimizationVpcCloud NetworkingSubnetsNat GatewayGcpAi ToolsProductivityManagementWorkflowClaudeSslSaasCaddyCloudfrontLets EncryptClaude CodeTeam WorkflowDeveloper ExperienceAi Coding

Claude Code Works — Until You Use It in a Team

Claude Code works great for individuals — until you try to use it across a team. This article breaks down why consistency fails, and how the .claude/ folder turns AI from a tool into reliable engineering infrastructure.

Raunak Gupta·Apr 28·14 min

ALB cert limit blocked vs Caddy NLB factory diagram

Cloud Infrastructure#aws#ssl

How I Solved AWS ALB's 25 SSL Certificate Limit for SaaS Custom Domains

Handling custom domains in a SaaS product looks simple — until your 26th customer signs up and ALB refuses to attach another SSL certificate. Here's the production architecture I built with Caddy, Let's Encrypt, and NLB to support thousands of custom domains, and the new CloudFront SaaS Manager alternative that showed up in April 2025.

Raunak Gupta·Apr 28·18 min

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8 articles

Confused devs vs consistent team using shared .claude folder

Applied AI#claude-code#ai-tools

Claude Code Works — Until You Use It in a Team

Raunak Gupta·Apr 28·14 min

Cloud Infrastructure#aws#ssl

How I Solved AWS ALB's 25 SSL Certificate Limit for SaaS Custom Domains

Raunak Gupta·Apr 28·18 min

Manager surrounded by AI assistants with hours-saved clock

Applied AI#ai-tools#productivity

How I Use AI as a Manager to Save 10+ Hours Every Week

A practical, real-world guide to using AI tools like ChatGPT and Claude Cowork to handle emails, meetings, reports, and decision-making—without losing the human side of leadership.

Raunak Gupta·Apr 28·16 min

Hand-drawn cloud campus diagram with subnets and peering

Cloud Infrastructure#vpc#aws

VPCs, Subnets, and Routing — Explained Like a Real System, Not a Textbook

Most cloud networking explanations make one critical mistake — they explain cloud concepts using cloud jargon. This article fixes that with real-world analogies and production patterns.

Raunak Gupta·Apr 28·13 min

Figure searching paper pages with a magnifying glass

Databases#sql#performance

Why Your Database Indexes Are Not Working (And How to Fix Them)

You added an index. Your query is still slow. This article covers the debugging mindset - why indexes fail in real systems, how to diagnose the problem, and how to fix it.

Raunak Gupta·Apr 28·30 min

Hand choosing between SQS and Kafka keycaps

Scalable System Design#aws#kafka

SQS vs Kafka: When to Use What in Real Systems

Both SQS and Kafka solve similar problems - until your system scales and the differences start to hurt. This article covers when each one breaks and how to make the right call.

Raunak Gupta·Apr 28·35 min

Caching machine turning tangled inputs into clean boxes

Scalable System Design#caching#redis

Caching Strategies That Work (And When They Fail)

Caching improves performance - until it starts serving stale data or becomes your biggest bottleneck. This article covers the real decisions you'll face in production.

Raunak Gupta·Apr 28·32 min

Overloaded request-processing machine with funnels and gauge

Scalable System Design#rate-limiting#redis

How to Design a Rate Limiter That Actually Works at Scale

Rate limiting looks simple - until you deploy it across multiple servers and it starts failing silently. This article covers what breaks in production and how to fix it.

Raunak Gupta·Apr 28·28 min

Where systems meet reality.

Claude Code Works — Until You Use It in a Team

How I Solved AWS ALB's 25 SSL Certificate Limit for SaaS Custom Domains

All Articles

Claude Code Works — Until You Use It in a Team

How I Solved AWS ALB's 25 SSL Certificate Limit for SaaS Custom Domains

How I Use AI as a Manager to Save 10+ Hours Every Week

VPCs, Subnets, and Routing — Explained Like a Real System, Not a Textbook

Why Your Database Indexes Are Not Working (And How to Fix Them)

SQS vs Kafka: When to Use What in Real Systems

Caching Strategies That Work (And When They Fail)

How to Design a Rate Limiter That Actually Works at Scale

All Articles

Claude Code Works — Until You Use It in a Team

How I Solved AWS ALB's 25 SSL Certificate Limit for SaaS Custom Domains

How I Use AI as a Manager to Save 10+ Hours Every Week

VPCs, Subnets, and Routing — Explained Like a Real System, Not a Textbook

Why Your Database Indexes Are Not Working (And How to Fix Them)

SQS vs Kafka: When to Use What in Real Systems

Caching Strategies That Work (And When They Fail)

How to Design a Rate Limiter That Actually Works at Scale

Where systems
meet reality.