data-engineering
8 posts tagged with "data-engineering"
Your dbt Tests Pass in CI. They Fail in Production. Here is Why.
CI tests pass on seed data but fail in production. This post explains how to structure dbt testing for production behavior — singular tests, source freshness, and contracts.
Data Freshness SLAs: Why Your 9 AM Dashboard Shows Stale Data
Your executive dashboard refreshes at 9 AM but shows data from yesterday. A batch job failed silently at 2 AM, and no one monitors pipeline lag. Here is how to define, measure, and enforce data freshness SLAs.
Duplicate Records Are Inflating Your Metrics. Here Is How to Find and Fix Them.
Your de-duplication logic is letting 8–15% of duplicates through. Revenue, MAU, and conversion counts are overreported. Here is how to audit and fix dedup at ingestion, storage, and query time.
Schema Drift Is Eating Your Data Lake. Here is How to Catch It Before It Reaches Production.
Parquet files accept new columns without complaint, and your pipeline silently drops data every time the source adds a field. Here is how to detect, prevent, and survive schema drift in columnar storage lakes.
Mastering Late-Arriving Data: A Practical Guide to AI Agent Observability with Amazon Redshift and MindsDB
Learn how to handle late-arriving dimensions in AI agent telemetry using Amazon Redshift and MindsDB. A practical tutorial with production-ready code for AWS data warehouses.
Snowflake Cost Failures: Patterns, Pitfalls, and Prevention
Analyzing real-world Snowflake cost failure patterns—from runaway warehouses to unbounded tasks—and how senior teams implement guardrails to prevent them.
When Insurance Analytics Meets Snowflake: Multi-Cluster Architecture for Peak Moments
Learn how Snowflake multi-cluster architecture solves insurance analytics challenges during peak moments like renewals, rate filings, and catastrophe events.
Building a Clean, Scalable Quant Research Pipeline in Python
Quantitative trading thrives on two things: sound domain logic and solid engineering discipline. A strategy may look strong in theory, but without reproducible pipelines, reliable data flows, and testable models, it becomes impossible to scale.