CloudFront Log Analytics·Indiana University

Human Reference Atlas Tools

Usage analytics for the HRA portal tools derived from Amazon CloudFront access logs. Covers Nov 2023 – May 2026 · 5 tools · 128 countries.

Total Tool Visits92,353Across all 5 HRA tools
Human Traffic78.5%of 17.7M CloudFront requests
Tools Analyzed5EUI · RUI · CDE · FTU · KG
Countries Reached128From US to Singapore to Ecuador
Clean Traffic

78.5% human traffic is unusually clean for a public scientific API — industry average for open endpoints is 40–60%.

AI Crawlers

468.9K AI-bot requests — LLM training crawlers are actively indexing HRA's open biomedical ontology and atlas data.

The 226× Gap

Each tracked visit fires ~151 HTTP requests — JS bundles, fonts, API calls, map tiles. CDN volume alone badly overstates actual user engagement.

Visit Concentration

KG Explorer captures 66.7% of all visits despite launching just months ago — reshaping the tool landscape faster than any prior release.

From 17.72M Requests to 92.4K Tool Visits

4-level flow: all CloudFront traffic → traffic type → tracked vs. infra → individual tools

Flow widths use sqrt-normalized scaling so thin links remain visible. Hover any node or link for exact counts. Tool Visits tooltip shows per-tool breakdown. “Infra Requests” = images, JS, CSS, fonts & API calls — the 151× overhead behind every tracked visit.

Total Visits by Tool

Cumulative page visits per HRA tool, Nov 2023 – May 2026

Traffic Breakdown

17,719,038 total CloudFront requests

When Are Users Active?

Traffic distribution by hour of day — human CloudFront requests, all sites

EST / EDT

Peak 8 AM–4 PM EST · 9 AM–5 PM EDT(top row EST · bottom row EDT)

9 AM EST · 10 AM EDT = single-hour peak

Monthly Unique Users

Distinct sessions per month across all HRA tools · 8 months of session data

Sessions
Interactivity Snapshot
Total Interactions218,170Clicks, hovers, keys, errors
Click Share37.5%81,807 click interactions
Opacity Toggles (RUI)371Low adoption — hidden feature
Spatial Searches (EUI)6,2166,216 total interactions

Interaction Types Across All Tools

218,170 total logged interactions across all HRA tools

Cross-Tool
Most commonClick (37.5%)
Event types tracked6 categories
Keyboard useSignificant — RUI keyboard nav

Where Are Clicks and Hovers Happening?

Top 15 UI elements per interaction type · tab totals show full event counts · color = tool for non-error events

Cross-Tool

Showing top 15 paths/messages covering 19,928 of 81,807 click events.

EUIRUICDEFTUKG ExplorerPortalHRA Pop
Surge Event

EUI visits spiked from 171 → 7,140HC in March 2024 — a 41× jump. Probably an internal HuBMAP/HRA training session (no public record found).

Undiscovered Feature

RUI opacity controls used only 371 times total across 5,776 visits — a powerful but buried feature.

Breakout Tool

KG Explorer launched Aug 2025 and hit 16,302 visits/mo by Mar '26 — now the most-visited HRA tool with 61,618 total visits.

Ecosystem Integration

GTEx Portal generates 2.15M API calls to HRA — the largest external consumer, ahead of HubMAP (1.74M).