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| author | Zuul <zuul@review.opendev.org> | 2022-01-27 21:37:03 +0000 |
|---|---|---|
| committer | Gerrit Code Review <review@openstack.org> | 2022-01-27 21:37:03 +0000 |
| commit | 4d480044831fb52a63002f668617b10ecef64558 (patch) | |
| tree | d24213bdbca41376aa2d9490b18382c2e44429d0 /etc | |
| parent | d765eefd295c9194caec5fc428db4591ecbbd979 (diff) | |
| parent | 8c6ccb5fd41864155a043856ff9240e84999e4bf (diff) | |
| download | swift-4d480044831fb52a63002f668617b10ecef64558.tar.gz | |
Merge "proxy: Add a chance to skip memcache when looking for shard ranges"
Diffstat (limited to 'etc')
| -rw-r--r-- | etc/proxy-server.conf-sample | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/etc/proxy-server.conf-sample b/etc/proxy-server.conf-sample index de51c7bcc..b89f8e6c4 100644 --- a/etc/proxy-server.conf-sample +++ b/etc/proxy-server.conf-sample @@ -144,6 +144,15 @@ use = egg:swift#proxy # so this value should be set less than recheck_updating_shard_ranges. # recheck_listing_shard_ranges = 600 # +# For particularly active containers, having information age out of cache can +# be quite painful: suddenly thousands of requests per second all miss and +# have to go to disk. By (rarely) going direct to disk regardless of whether +# data is present in memcache, we can periodically refresh the data in memcache +# without causing a thundering herd. Values around 0.0 - 0.1 (i.e., one in +# every thousand requests skips cache, or fewer) are recommended. +# container_updating_shard_ranges_skip_cache_pct = 0.0 +# container_listing_shard_ranges_skip_cache_pct = 0.0 +# # object_chunk_size = 65536 # client_chunk_size = 65536 # |