SQL | John Nessime

Data Lake vs Data Warehouse for CRM Analytics: Volume Is the Wrong Question

Post category:Cloud Computing DevOps Technical Guides

Everyone argues this one on data volume, and volume is the argument that matters least: CRM data is small enough that both architectures handle it comfortably. What actually decides data lake vs data warehouse for CRM analytics is how much point-in-time history you need, how fast the schema churns, what shape your queries are, and who is going to maintain the thing. Includes a decision procedure you can run in an afternoon.

AWS Glue Data Quality for SaaS Data: Catching the Breakage Nobody Deployed

Post category:Cloud Computing DevOps Technical Guides

A SaaS admin changes a field and your pipeline stays green while the numbers drift. A practical guide to AWS Glue Data Quality for SaaS sources: where to run the checks, why nested payloads need flattening before DQDL can see them, which rule catches which failure, and the dynamic rules that pass silently because they have no history yet.

Shopify Sales Dashboard with AWS: Build One That Actually Reconciles

Post category:Cloud Computing Technical Guides

Most Shopify dashboards built on AWS work perfectly for about three weeks, then quietly drift away from the numbers in the Shopify admin. Here is why that happens, and how to design the ingestion, storage and query layers so your totals still reconcile six months in.

Building a Jira Analytics Pipeline with AWS Lambda and Athena (Without Double-Counting Everything)

Post category:Cloud Computing DevOps Technical Guides

Jira's built-in reports stop at the board boundary. This guide walks through a Jira analytics pipeline built on AWS Lambda, S3 and Athena, organised around the four failure families that actually bite: the removed search endpoint, silently truncated changelogs, incremental loads that duplicate rows, and an S3 layout that quietly inflates your query bill.

Redshift Cost Optimization for SaaS Analytics: The Levers That Actually Move the Bill

Post category:Cloud Computing DevOps Technical Guides

In a SaaS analytics product, the Redshift bill tracks how often queries arrive, not how much data they touch. Here is how the meter actually works, why connection pools bill you while nobody is using the product, how to attribute spend to a tenant, and which isolation choices quietly cost more than they save.

Embedded Analytics on AWS: The Four Decisions That Bite Later

Post category:Cloud Computing DevOps Technical Guides

Rendering a dashboard inside your app is the easy part. Tenant isolation, session cost and query mode are what break. A practical walkthrough of the four decisions behind embedded analytics on AWS, the API constraints that lock you in, and the errors you will actually see.

Building an AI Construction Claims Platform on AWS That Holds Up Under Scrutiny

Post category:Case Studies Cloud Computing Technical Guides

Semantic search finds the most persuasive document, not the earliest one. Here is how to architect an AI construction claims and dispute intelligence platform on AWS so retrieval respects the contractual clock, schedule data stays out of the vector index, every answer resolves to a page, and privileged material never shares a retrieval path with project records.

The Row Count That Only Goes Up: Building a Salesforce Data Lake on AWS

Post category:Cloud Computing DevOps Technical Guides

Your dashboard shows four percent more opportunities than Salesforce, and the extra rows were all deleted months ago. Incremental sync on SystemModstamp can never see a record that no longer exists. Here's how to build a Salesforce data lake on AWS that stays equal to the source.

The Column That Never Shows Up: Fixing Redshift and Zoho Analytics Schema Mismatches

Post category:Cloud Computing Technical Guides Troubleshooting

You added a column in Redshift, clicked Sync Design, and it reported success. The column still isn't in the dashboard. That's documented behaviour: one unresolved mismatch anywhere blocks new column information everywhere. Here's how to clear them and stop them coming back.

Connect Amazon Redshift to Zoho Analytics Without Putting Your Warehouse on the Internet

Post category:Cloud Computing Technical Guides Web Security

Every guide tells you to tick "Publicly Accessible" and move on. That works, and it also puts your warehouse on the internet with whatever credentials were to hand. Here's the full setup done deliberately: least-privilege user, narrow network access, and the outbound-only option nobody mentions.