[BLOG] Lucene HNSW performance: A deep dive into the OS page cache

[Akhil-Pathivada]

Description

This pull request introduces a new technical blog post, "Lucene HNSW performance: A deep dive into the OS page cache."
The article explains the critical role of the OS page cache for high-performance vector search in OpenSearch, offering readers practical guidance on memory configuration and performance tuning.

Issues Resolved

Closes #3996

Check List

• Commits are signed per the DCO using --signoff

By submitting this pull request, I confirm that my contribution is made under the terms of the BSD-3-Clause License.

[github-actions]

Thank you for submitting a blog post!

The blog post review process is: Submit a PR -> (Optional) Peer review -> Doc review -> Editorial review -> Marketing review -> Published.

[github-actions]

Hi @Akhil-Pathivada,

It looks like you're adding a new blog post but don't have an issue mentioned. Please link this PR to an open issue using one of these keywords in the PR description:

• Closes #issue-number
• Fixes #issue-number
• Resolves #issue-number

If an issue hasn't been created yet, please create one and then link it to this PR.

[Akhil-Pathivada]

@pajuric Could you please help get this reviewed?

[pajuric]

@natebower - Please perform an editorial review for this Lucene blog.

@Akhil-Pathivada - Please be sure to open a blog issue here so this can be reviewed and scheduled. Without it, the process can't move forward: https://github.com/opensearch-project/project-website/issues/new?template=blog_post.yml

[natebower]

Editorial review

[natebower]

Thanks @Akhil-Pathivada! LGTM

@pajuric This should be ready to publish.

[pajuric]

Blog on hold per @Akhil-Pathivada's request.