Alex Chi Z. 8d70f88b37 refactor(pageserver): use JSON field encoding for consumption metrics cache (#9470) ...

In https://github.com/neondatabase/neon/issues/9032, I would like to
eventually add a `generation` field to the consumption metrics cache.
The current encoding is not backward compatible and it is hard to add
another field into the cache. Therefore, this patch refactors the format
to store "field -> value", and it's easier to maintain backward/forward
compatibility with this new format.

## Summary of changes

* Add `NewRawMetric` as the new format.
* Add upgrade path. When opening the disk cache, the codepath first
inspects the `version` field, and decide how to decode.
* Refactor metrics generation code and tests.
* Add tests on upgrade / compatibility with the old format.

---------

Signed-off-by: Alex Chi Z <chi@neon.tech>

2024-10-30 18:13:11 +00:00

..

benches

pageserver: move things around to prepare for decoding logic (#9504)

2024-10-29 10:00:34 +00:00

client

pageserver: add direct io config to virtual file (#9214)

2024-10-09 08:33:07 -04:00

compaction

2024 oct new clippy lints (#9448)

2024-10-18 10:27:50 +01:00

ctl

fix(pagectl): layer parsing and image layer dump (#9571)

2024-10-29 15:16:23 -04:00

pagebench

refactor(pageserver): remove aux v1 configs (#9494)

2024-10-28 19:51:14 +00:00

src

refactor(pageserver): use JSON field encoding for consumption metrics cache (#9470)

2024-10-30 18:13:11 +00:00

test_data

pageserver: add layer visibility calculation (#8511)

2024-08-01 09:25:35 +00:00

Cargo.toml

pageserver: move things around to prepare for decoding logic (#9504)

2024-10-29 10:00:34 +00:00