MongoDB, running in-process

WiredTiger B-Trees in your application. Full MQL queries. Zero network latency. Bidirectional sync to Atlas when you're ready.

Local Documents 0

No data yet — click Reset & Seed to load sample documents

MQL Query — runs against local WiredTiger, zero network

all docs age > 30 city = NYC engineering salary ≥ 140k SF or LA has python name A-E all tags 2 tags

{}

Click a chip or type a query and hit Find

Aggregation Pipeline

Count by city Avg salary/dept Top 3 earners Tag breakdown Salary buckets

Pick an aggregation above

Indexes 0

Name	Keys	Unique
No indexes

Local Engine

WiredTiger · in-process

documents

Push →

DISCONNECTED

← Pull

MongoDB Atlas

Remote cluster

documents

Sync Controls

Pushed

Pulled

Conflicts

Simulate Remote Client

Insert a document directly into Atlas — as if another client wrote it. Then pull to sync locally.

{"name": "Zara", "age": 26, "city": "BOS", "dept": "data", "tags": ["python"], "salary": 115000}