D1 Database Benchmark

Compare D1 performance with Smart Placement, Read Replication + KV Caching

Worker Colo -

Region -

Smart Placement Enabled

D1 Region -

Read Replication -

Seed Database Clear Database Clear Cache Refresh Stats

- Users

- Products

- Orders

- Cached Keys

D1 Direct Queries

Direct database queries (Smart Placement optimized)

Single Read

SELECT single row by ID

Run

Batch Read

5 SELECT queries in batch

Run

Single Write

INSERT single row

Run

Batch Write

10 INSERTs in batch

Run

JOIN Query

3-table JOIN (orders+users+products)

Run

Aggregation

GROUP BY with SUM, COUNT, AVG

Run

Read Replication (Beta)

Sessions API routes reads to nearest replica for lower global latency

Session Read (Replica)

Routes to nearest read replica

Run

Session Read (Primary)

Forces routing to primary DB

Run

Replication Comparison

Compare Direct vs Replica vs Primary

Run Comparison

KV Cached Queries

Queries with Workers KV caching layer (run twice to see cache hits)

Cached Single Read

KV cache with D1 fallback

Run

Cached Batch Read

Multi-key KV lookup

Run

Cached JOIN Query

Complex query result caching

Run

Performance Comparison

Run D1 direct vs KV cached (cold + warm) side-by-side

Run D1 Suite Run D1 vs KV Comparison

D1 vs KV Cache Comparison

D1 Direct

KV Cache (Cold)

KV Cache (Warm)

Full Suite Results

Operation	Duration (ms)	Rows Read	Rows Written	Status

Benchmark History