Data Preparation in Power BI: Cleaning, Transforming, and Loading Data for Real-World Analytics
Introduction Before any dashboard delivers value, there’s a quiet but critical phase every analyst must master data preparation. In Microsoft Power BI…
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Cookieless EC measurement: a 4-step shift to first-party
"Safari traffic looks like it lost 30% of conversions year over year." "Tags fire empty after the cookie banner went up." I keep hearing variations of…
You Want To Learn SQL? Here Is What I know So far...
SQL: What is it? First of all, it stands for Structured Query language. It is one of the programming languages used to communicate with relational dat…
I Compared 5 Heatmap Tools. They All Have the Same Blind Spot
"Will adding a heatmap tool grow our revenue?" It's the most common question I hear from ecommerce operators. The honest answer turned out to be more …
"PostHog + Next.js 16 App Router: the Suspense gotcha that silenced my analytics for 6 days"
I shipped a no-op stub of PostHogProvider.tsx on April 20. I told myself I would come back to it that afternoon. Six days later I was reviewing my ana…
ROAS 100% is not the breakeven point — what most ad reports get wrong
I keep hearing this line in marketing reviews: "Our ad ROAS is 300%, so we're profitable." For a 50% gross margin product, that's true. For a 20% gros…
Using Databricks Genie for Natural Language Querying on Semantic Models
Overview Databricks Genie is designed to let business users ask questions in plain language and receive answers grounded in governed enterprise data i…
The Journey from Scattered Data to an Apache Iceberg Lakehouse with Governed Agentic Analytics
The conventional wisdom for data platform modernization goes like this: pick a target system, build ETL pipelines for every source, migrate everything…
Plausible vs Fathom Analytics: Which Fits in 2026?
If you’re searching for plausible vs fathom analytics , you’re probably trying to ship a privacy-friendly dashboard without turning your site into a s…
Overview: Getting Started with Seal Report
Seal Report is an open-source reporting engine designed for developers who prefer working close to their data layer instead of relying on heavyweight …
How We Built a Conversational Analytics Platform That Replaces Your BI Dashboard
Every company I've worked with has the same problem: 3 analysts drowning in data requests while 50 other team members wait days for answers. Dashboard…
Cost Optimization Strategies for Databricks Workloads
Introduction Databricks has become a core platform for data engineering, analytics, and machine learning. It brings flexibility and scalability, but i…
How we scaled to 1.3 MILLION Session Replays
Rejourney.co has scaled to over 1.3 MILLION session replays from app developers over the world. Rejourney is an alternative to sentry.io and posthog.c…
Finding a Practical Analytics Format for Structured JSON Logs
Structured JSON logs are easy to produce and hard to analyze at scale. They carry useful context, but that context is nested, optional, inconsistent, …
The utm_source you should NOT use for Meta Ads (and why GA4 makes it disappear)
A lot of marketers — myself included, at first — tag their Meta (Facebook / Instagram) ad URLs with utm_source=meta . It feels natural: the company is…
Getting Data from Multiple Sources in Power BI: Building the Foundation of a Data Analytics Career
Introduction Every meaningful insight in data analytics begins long before dashboards and visualizations. It starts with how you access , understand ,…
I Built a Cookie-Free Visitor Analytics Platform — Here's What I Learned
I Built a Cookie-Free Visitor Analytics Platform — Here's What I Learned TL;DR: I built identity-js , an open-source visitor intelligence platform tha…
Mastering the SQL Analytical Toolkit
As a budding data professional, I recently completed an intensive SQL Week 2 Assignment that pushed me from basic queries into more powerful territory…
Serverless CDC and Event Ingestion Patterns into Analytics Pipelines on AWS
When I work on analytics pipelines for event-driven systems, one of the biggest mistakes I see is treating ingestion as “just connect source A to sink…
Stop Collapsing Your Data: Why Window Functions Are a Game Changer
If you've been learning SQL for a few weeks, you're probably comfortable with GROUP BY . It's the bread and butter of data analysis. But have you ever…
SQL for Beginners: Essential Concepts Made Simple
SQL stands for Structured Query Language. It is the standard language used to communicate with databases. Think of SQL as the "English" you speak to a…
ETL vs ELT: The Data Pipeline Behind Every Powerful Dashboard
A Brief History on ETL & ELT Processes Data integration has long been a critical challenge for businesses seeking to unify and leverage data from …
DashbordMe - Would you switch your analytics stack for an 'Operating Layer'? (Feedback Wanted)
I'm building DashboardMe to unify analytics and heatmaps. Is it enough to make you ditch your current tools? showdev, analytics, productivity, webdev …
Getting Started With Seal Reports: Sharing Filters Across Multiple Models
This is the seventh post in the series. The final report may contain multiple UI elements: data tables, KPI widgets, and various types of charts. When…
How We Measure Content ROI on a Comparison Site: Revenue Attribution Without Perfect Data
How do you know if a blog post is worth writing? For most content teams, the answer is page views or organic traffic. At SmartReview , we measure cont…
Join таблиц в реальном времени на Apache Flink ( Часть 3 )
Скорее всего читатели знают, но контекста ради. Flink имеет децентрализованный дизайн с распределенной архитектурой, где набор контейнеров ( Task Mana…
Mastering Power BI: Connect, Preview, and Transform Data from any Source
Connecting Data from Multiple Sources in Power BI: A Comprehensive Technical Guide Introduction In the world of data analytics, insights are only as g…