Blog
Database

MongoDB

Document modelling as physical design, replica set write and read concerns, shard key selection, compound index prefixes, and the aggregation pipeline.

Read the MongoDB guide

Concepts it implements

Replication lag

The delay between a write committing on the primary and becoming visible on a replica.

Eventual consistency

Replicas converge on the same state given no further writes, but may disagree at any given moment.

Shard key

The field determining which shard a document lives on, and therefore which queries can be routed to one shard rather than all of them.

Where MongoDB sits

How this component relates to the rest of the stack. Items without a link are not covered here yet.

Depends on

Must be present for this to run

Deployed with

Commonly run alongside

Alternatives

Solves a similar problem differently

MongoDB release support

4 supported
ReleaseLatestReleasedEnd of lifeStatus
9.09.0.2Sept 2026Oct 2031Supported
8.38.3.11May 2026Oct 2029Supported
8.28.2.12Sept 2025Jul 2026End of life
8.18.1.3Jun 2025Sept 2025End of life
8.08.0.32Oct 2024Oct 2029Supported
7.37.3.4Mar 2024Oct 2024End of life
7.27.2.2Jan 2024Mar 2024End of life
7.17.1.1Oct 2023Jan 2024End of life
7.07.0.43Aug 2023Aug 2027Supported
6.06.0.29Jul 2022Jul 2025End of life
5.05.0.34Jul 2021Oct 2024End of life
4.44.4.31Jul 2020Feb 2024End of life

Data as of 2026-10-01 from endoflife.date. Refresh with node scripts/fetch-versions.mjs.

Search the site