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Developer Tool - Index Overhead Visualizer
See why too many indexes hurt write performance — visualize write amplification, storage cost, and maintenance tradeoffs.
Number of Indexes on Table
3
Write Operations
4
per single INSERT
Write Amplification
4x
vs no indexes
Storage Overhead
~60%
extra disk space
Index Maintenance
Low
rebuild time
📊 Orders Table
TABLE
dbo.Orders (1,000,000 rows)
OrderId, CustomerId, OrderDate, Status, Total, ShipDate, Region, ProductId...
🗂️ Indexes
📜 Operation Log
Click INSERT, UPDATE, or DELETE to see write operations
⚖️ The Tradeoff
Read Performance (SELECT)
Faster →
Good
Write Performance (INSERT/UPDATE/DELETE)
← Slower
OK
Storage Used
More →
+60%
Maintenance Window
Longer →
30 min
💡
With 3 indexes, each INSERT requires 4 write operations (1 table + 3 indexes). This is a reasonable balance for most workloads.