# How Fern uses Algolia

**30%**: “support a 30% month-over-month increase in searches and avoid issues related to downtime”

As published on [algolia.com](https://www.algolia.com/customers/fern-case-study). Captured by usedby on 2026-10-07.

- Company: [Fern](https://www.usedby.ai/companies/fern.md)
- Tool: [Algolia](https://www.usedby.ai/tools/algolia.md)

## What the story says

Fern uses Algolia, starting with DocSearch and later the Search API, to power search across its customers' API documentation sites. It runs a multi-tenant setup with secured API keys that restrict users to a subset of an index, and builds its own search UI with Algolia's headless components.

Summary written by usedby from the source page, in English. The figures are those of Algolia and Fern, not ours.

> The test came during a recent period of rapid customer growth, where Fern tripled its customer base within a year. Customer expectations remained the same, but now Fern needed a reliable search infrastructure to support a 30% month-over-month increase in searches and avoid issues related to downtime.

- **under 200 ms**: “That method runs seamlessly, without needing a network call to Algolia's servers and responding in under 200 ms anywhere in the world.”
- **less than a week**: “It took Fern less than a week to design, implement, then iterate on the Algolia record data structure.”
- **150**: “Since launching in 2023, we've been trusted by over 150 customers, including industry leaders like Square, Webflow, ElevenLabs, LaunchDarkly, and Intercom, to power their developer experience (DX) and agent experience (AX).”

> Our experience has been that Algolia scales with our user growth. Never once have we had a moment of downtime or an engineer skip a heartbeat because of Algolia.
>
> Danny Sheridan, CEO for Fern

## What usedby checked

We compared the story with its live page on 2026-10-07.

- Checked: the figure 30% is printed word for word on the page, near the name of Fern.
- Checked: the passage quoted above is copied word for word from the page, near the name of Fern.
- Checked: Fern uses Algolia. Confirmed line. Latest check across sources: 2026-10-07.
- Not checked: the result itself. We quote it; we did not measure it.

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Source: https://www.usedby.ai/case-studies/fern-algolia · How we check: https://www.usedby.ai/methodology