Revert optimization from a6163258b. Turns out that we have to resolve
aliases in fast_count, otherwise for aliased tags we'll return an empty
count.
Fixes#4156.
Don't try delete files belonging to completed uploads during pruning. If
an uploaded post was replaced shortly after upload, then the original
file could get deleted during pruning since it's no longer in use, but
this isn't supposed to happen until the replacement grace period (30
days) is over.
* Don't try to call `sadd` when a search returns no results (`sadd`
fails in this case).
* Add a timeout when populating the search.
* Don't offload the search to read replica. The main db is fine.
* Disable synchronous population of searches. This was too slow.
* Change the source index on posts from `(lower(source) gin_trgm_ops) WHERE source != ''`
to just `(source gin_trgm_ops)`. The WHERE clause prevented the index
from being used in source:<url> searches because we didn't specify
the `source != ''` clause in the search itself. Excluding blank
sources only saved a marginal amount of space anyway. This fixes
timeouts in source:<url> searches and in the bookmarklet (since we do
a source dupe check on the upload page too).
* Also switch from indexing `lower(name)` to `name` on pools and users.
We don't need to lowercase the column because GIN indexes can be used
with both LIKE and ILIKE queries.
* Remove 'Change password' and 'Delete account' tabs.
* Put 'Change password' under the Basic section.
* Put 'Deactivate account' under the Advanced section.
* Add help text to various settings.
DEPRECATION WARNING: Initialization autoloaded the constants
Danbooru::Paginator and Danbooru::Paginator::ActiveRecordExtension.
Being able to do this is deprecated. Autoloading during
initialization is going to be an error condition in future versions
of Rails.
Reloading does not reboot the application, and therefore code
executed during initialization does not run again. So, if you reload
Danbooru::Paginator, for example, the expected changes won't be
reflected in that stale Module object.
`config.autoloader` is set to `classic`. These autoloaded constants
would have been unloaded if `config.autoloader` had been set to
`:zeitwerk`.
Please, check the "Autoloading and Reloading Constants" guide for
solutions.
Fixes issue with newrelic failing to set up rake instrumentation:
ERROR : Error while detecting rake_instrumentation:
ERROR : NameError: uninitialized constant Rake::VERSION
DEPRECATION WARNING: Dangerous query method (method whose arguments
are used as raw SQL) called with non-attribute argument(s): "id =
52664 desc". Non-attribute arguments will be disallowed in Rails
6.1. This method should not be called with user-provided values,
such as request parameters or model attributes. Known-safe values
can be passed by wrapping them in Arel.sql().
Make /favorites redirect to a ordfav:<user> search instead of having a
separate view just for favorites. This duplicated a lot of code for no
good reason.
Comments have three states: visible, hidden, and invisible. Visible
comments are always shown. Hidden comments are not shown until the user
clicks 'Show all comments'. Invisible comments are never shown to the
user. Deleted comments are treated as hidden for moderators and
invisible for normal users. Thresholded comments are treated as hidden
for all users.
Rewrite the implementation of related tags to be simpler, faster, and
more accurate:
* The related tags are now calculated by taking a random sample of 1000
posts, finding the top 250 most frequent tags among those posts, then
ordering those tags by cosine similarity.
* Related tags can generally be calculated in 50-300ms at these sample
sizes. Very high sample sizes (25000+ posts) are still relatively fast
(1-3 seconds), but generally they don't improve accuracy much.
* Related tags are now cached in redis rather than in the tags table.
The related_tags column in the tags table is no longer used.
* Only the related tags in the search taglist are cached. The related
tags returned by the 'Related tags' button are not cached.
* The cache lifetime is a fixed 4 hours.
* The 'Related tags' button now works with metatags.
* The /related_tag page now works with metatags and multitag searches.
Fixes#4134, #4146.
