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S3 Implement Replication#689

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doc-259-doc-s3-implement-s3-replication-emulation
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S3 Implement Replication#689
blkgrlcto wants to merge 5 commits into
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doc-259-doc-s3-implement-s3-replication-emulation

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@blkgrlcto

@blkgrlcto blkgrlcto commented Jun 4, 2026

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Changes

  • Introduction: Updated to mention S3 Replication support alongside existing S3 capabilities.
  • S3 Replication section (new): Added a new section covering:
    • One-way and two-way replication
    • How replication works in LocalStack (scan-based mechanism, eventual consistency)
    • IAM enforcement -how LocalStack evaluates replication permissions using the IAM engine directly, including role assumption and caching behavior
    • Metadata replication- default metadata replication and replica metadata synchronization
    • ReplicationStatus field and its possible values
    • Known limitations callout (IAM enforcement for tag-based filters, ACL replication)

Related Docs tickets

  • DOC-259 - Initial S3 Replication implementation (one-way, two-way, ReplicationStatus)
  • DOC-262 - Metadata replication (default replication and replica metadata synchronization)
  • DOC-263 - IAM enforcement for replication tasks

bentsku
bentsku requested changes Jun 8, 2026
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Thanks a lot for jumping on this! Sorry that at the time, we didn't have the new PR templates giving more context for the documentation updates, and in my PR descriptions there were a lot of internal-only informations.

I would remove a lot of the internal details (see comments) and then I think we'd be good to go 👍

How do we want to release such documentation changes? It's already part of dev but not stable yet

Comment thread src/content/docs/aws/services/s3.mdx Outdated
Comment thread src/content/docs/aws/services/s3.mdx Outdated
Comment thread src/content/docs/aws/services/s3.mdx Outdated
Comment thread src/content/docs/aws/services/s3.mdx Outdated
Comment thread src/content/docs/aws/services/s3.mdx Outdated
Comment thread src/content/docs/aws/services/s3.mdx
Comment thread src/content/docs/aws/services/s3.mdx Outdated
@quetzalliwrites

quetzalliwrites commented Jun 15, 2026

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hey @blkgrlcto looks like this still has feedback pending :)

@quetzalliwrites

quetzalliwrites commented Jun 23, 2026

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Hey @blkgrlcto we still have feedback pending 🌈

@blkgrlcto @bentsku
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765ce98 
Co-authored-by: Ben Simon Hartung <42031100+bentsku@users.noreply.github.com>
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cloudflare-workers-and-pages Bot commented Jun 25, 2026 •
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Deploying localstack-docs with  Cloudflare Pages  Cloudflare Pages

Latest commit: 104d813
Status: ✅  Deploy successful!
Preview URL: https://5c5073b7.localstack-docs.pages.dev
Branch Preview URL: https://doc-259-doc-s3-implement-s3.localstack-docs.pages.dev

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@blkgrlcto
Update s3.mdx
104d813 
address PR review feedback on S3 Replication section
@quetzalliwrites quetzalliwrites requested a review from bentsku June 28, 2026 18:41
@quetzalliwrites

quetzalliwrites commented Jun 28, 2026

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@bentsku it looks like Kiah has incorporated all your feedback, can you please review again and let us know if you approve? :)

quetzalliwrites
quetzalliwrites approved these changes Jun 28, 2026
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tyvm @blkgrlcto 🐈‍⬛

@blkgrlcto

blkgrlcto commented Jun 29, 2026

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Addressed @bentsku's suggestions. Ready for final review

bentsku
bentsku approved these changes Jun 30, 2026
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LGTM, thanks for addressing the comments! Please note that they are 2 duplicated lines where I commented, but once this is addressed it looks ready to me! Thanks 💯

Comment thread src/content/docs/aws/services/s3.mdx
Comment on lines +280 to +281
LocalStack supports replication of object metadata — specifically tags and Object Lock settings. Metadata replication operates in two modes:
LocalStack supports replication of object metadata, specifically tags and Object Lock settings. Metadata replication operates in two modes:

@bentsku bentsku Jun 30, 2026

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note: there are 2 duplicate lines here

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@quetzalliwrites quetzalliwrites quetzalliwrites approved these changes
@bentsku bentsku bentsku approved these changes
@k-a-il k-a-il Awaiting requested review from k-a-il k-a-il is a code owner
@aidehn aidehn Awaiting requested review from aidehn aidehn is a code owner
@HarshCasper HarshCasper Awaiting requested review from HarshCasper HarshCasper is a code owner

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@blkgrlcto @quetzalliwrites @bentsku