Summary:
Update the zstd crates.
This also patches async-compression crate to point at my fork until upstream PR https://github.com/Nemo157/async-compression/pull/117 to update to zstd 1.4.9 can land.
Reviewed By: jsgf, dtolnay
Differential Revision: D27942174
fbshipit-source-id: 26e604d71417e6910a02ec27142c3a16ea516c2b
Summary:
It's useful when operating with timeseries to know what range of data has been
populated. This diff adds support for this in mononoke/timeseries, by tracking
the number of buckets that fall within intervals where data was provided.
Reviewed By: mitrandir77
Differential Revision: D27734229
fbshipit-source-id: 3058a7ce4da67666e8ce8a46e34e277b69153ea4
Summary:
Like it says in the title. This is a place where we use timeseries so we might
as well use that shared crate.
Reviewed By: mzr
Differential Revision: D27678389
fbshipit-source-id: 9b5d4980a1ddb5ce2a01c8ef417c78b1c3da80b7
Summary:
I'd like to be able to track time series for access within Mononoke. The
underlying use case here is that I want to be able to track the max count of
connections in our SQL connection pools over time (and possibly other things in
the future).
Now, the obvious question is: why am I rolling my own? Well, as it turns out,
there isn't really an implementation of this that I can reuse:
- You might expect to be able to track the max of a value via fb303, but you
can't:
https://www.internalfb.com/intern/diffusion/FBS/browse/master/fbcode/fb303/ExportType.h?commit=0405521ec858e012c0692063209f3e13a2671043&lines=26-29
- You might go look in Folly, but you'll find that the time series there only
supports tracking Sum & Average, but I want my timeseries to track Max (and
in fact I'd like it to be sufficiently flexible to track anything I want):
https://www.internalfb.com/intern/diffusion/FBS/browse/master/fbcode/folly/stats/BucketedTimeSeries.h
It's not the first time I've ran into a need for something like this. I needed
it in RendezVous to track connections over the last 2 N millisecond intervals,
and we needed it in metagit for host draining as well (note that the
implementation here is somewhat inspired by the implementation there).
Reviewed By: mzr
Differential Revision: D27678388
fbshipit-source-id: ba6d244b8bb848d4e1a12f9c6f54e3aa729f6c9c
