# Concepts

::::card-grid
:::card{title="Data structure" href="/guides/concepts-data"}
Core data object concepts, schema design, and data organization principles in Weaviate.
:::

:::card{title="Data import" href="/guides/concepts-data-import"}
Theoretical explanation of client-side and server-side batch imports.
:::

:::card{title="Modules" href="/guides/concepts-modules"}
Modular architecture overview for extending Weaviate functionality with specialized add-on components.
:::

:::card{title="Storage" href="/guides/concepts-storage"}
Persistent, fault-tolerant storage architecture for objects, vectors, and inverted index management, including HNSW snapshots and commit log compaction.
:::

:::card{title="Compression (Vector Quantization)" href="/guides/concepts-vector-quantization"}
Vector compression techniques reducing memory footprint and costs while improving search speed performance.
:::

:::card{title="Filtering" href="/guides/concepts-filtering"}
Filtered vector search capabilities combining semantic similarity with structured scalar filtering.
:::

:::card{title="Reranking" href="/guides/concepts-reranking"}
Search result reordering techniques using alternative models to improve search relevance and accuracy.
:::

:::card{title="Horizontal Scaling" href="/guides/concepts-cluster"}
Multi-node cluster architecture and horizontal scaling strategies for high-availability Weaviate deployments.
:::

:::card{title="Interface" href="/guides/concepts-interface"}
RESTful, GraphQL and gRPC API interfaces with client library support for Weaviate integration.
:::

:::card{title="Resource Planning" href="/guides/concepts-resources"}
CPU, memory, and GPU resource planning guidelines for optimal Weaviate performance at scale.
:::
::::

## Related pages

- [Agents](./agents-index.md)
- [AI-assisted Weaviate code generation](./ai-assisted-vibe-coding-index.md)
- [APIs](./apis-index.md)
- [Authorization and authentication](./authorization-and-authentication-index.md)
- [Benchmarks](./benchmarks-index.md)
- [Best practices](./best-practices-index.md)
- [Client libraries](./clients-index.md)
- [Client Libraries / SDKs](./client-libraries-index.md)
- [Cloud](./cloud-index.md)
- [Cloud account management](./cloud-account-management-index.md)

# Agent Instructions

This portal answers questions programmatically. To receive a synthesized,
source-cited answer instead of crawling page by page, append the `?ask=`
query parameter to any page URL on this site:

    /guides/quickstart?ask=how+do+I+authenticate

Optional parameters:

- `&goal=<what-you-are-trying-to-do>` steers the answer toward your
  objective (e.g. `&goal=write+a+python+client`).
- `&version=<label>` scopes the answer to a mounted version when the
  portal publishes more than one.

The response is `text/markdown`: the answer followed by a `# Sources` list
of the portal pages it was grounded in. Status codes are the contract:

- `200` — the answer; `402` — the portal owner’s plan or answer credits are
  exhausted (surface this to your operator; do NOT retry); `429` — you are
  rate-limited; back off for the `Retry-After` seconds; `503` — the answer
  lane is temporarily unavailable; fall back to crawling the `.md` pages.

For the full corpus map read `llms.txt` at the site root; for the tool
surface (search + page fetch as MCP tools) see `/mcp`.