[PR] [improve][docs] Add the seek by timestamp benchmark of offloaded topics to the release highlights [pulsar-site]

["KannarFr (via GitHub)" <gi...@apache.org>]

KannarFr opened a new pull request, #1241:
URL: https://github.com/apache/pulsar-site/pull/1241

   Adds a benchmark section to the release highlights for searches by timestamp on offloaded topics, as discussed with @lhotari.
   
   The new section, "Seek by timestamp in offloaded topics with fewer object store requests", follows the structure of the tailing-reads benchmark above it: the use case, the setup, a results table, what each change contributes, a chart, how it was measured, and what the results do not show.
   
   It covers three changes to how offloaded ledgers are read:
   
   - the reuse of entry offsets found while scanning a data block, contributed by @omarkj;
   - the search reading the first entry of data blocks;
   - the offsets remembered for each open offloaded ledger.
   
   Ranged reads sent to the object store per search, with 64 MiB data blocks and a 1 MiB read buffer:
   
   | | Before | After the first change | After the second | 5.0.0 |
   | --- | ---: | ---: | ---: | ---: |
   | Cold search, mean of 16 | 428 | 156 | 61 | 44 |
   | Warm search, mean of 16 | 223 | 14 | 9 | 9 |
   
   Notes for the review:
   
   - The numbers come from `OffloadedLedgerFindPositionTest` run against an in-memory object store, so they count requests and bytes, not latency. The page says so.
   - "Before" is the code without any of the three changes, as in 4.0.13 and 4.2.4. The page states that the first change is also in the 4.0 and 4.2 maintenance branches for their next releases.
   - The chart is `static/assets/release-highlights-5.0/seek-by-timestamp-offloaded-ranged-reads.svg`, with the fonts, colors and layout of the two existing charts in that directory.
   
   The same section is added to `docs/` and to `versioned_docs/version-5.0.x/`.
   
   ### ✅ Contribution Checklist
   
   - [x] I read the [contribution guide](https://pulsar.apache.org/contribute/document-contribution/)
   - [x] I updated the [versioned docs](https://pulsar.apache.org/contribute/document-contribution/#update-versioned-docs)
   
   🤖 Generated with [Claude Code](https://claude.com/claude-code)
   


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Re: [PR] [improve][docs] Add the seek by timestamp benchmark of offloaded topics to the release highlights [pulsar-site]

["lhotari (via GitHub)" <gi...@apache.org>]

lhotari merged PR #1241:
URL: https://github.com/apache/pulsar-site/pull/1241


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