Alex Chi Z 89f023e6b0 feat(pageserver): add metadata key range and aux key encoding (#7401) ...

Extracted from https://github.com/neondatabase/neon/pull/7375. We assume
everything >= 0x80 are metadata keys. AUX file keys are part of the
metadata keys, and we use `0x90` as the prefix for AUX file keys.

The AUX file encoding is described in the code comment. We use xxhash128
as the hash algorithm. It seems to be portable according to the
introduction,

> xxHash is an Extremely fast Hash algorithm, processing at RAM speed
limits. Code is highly portable, and produces hashes identical across
all platforms (little / big endian).

...though whether the Rust version follows the same convention is
unknown and might need manual review of the library. Anyways, we can
always change the hash algorithm before rolling it out in
staging/end-user, and I made a quick decision to use xxhash here because
it generates 128b hash + portable. We can save the discussion of which
hash algorithm to use later.

---------

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

2024-04-23 15:16:04 +00:00

..

src

feat(pageserver): add metadata key range and aux key encoding (#7401)

2024-04-23 15:16:04 +00:00

Cargo.toml

feat: bare-bones /v1/utilization (#6831)

2024-02-22 13:58:59 +02:00