Commit Graph

20 Commits

Author SHA1 Message Date
Guo Xiang Tan 9b75d95fc6 PERF: Keep track of first unread PM and first unread group PM for user.
This optimization helps to filter away topics so that the joins on
related tables when querying for unread messages is not expensive.
2020-09-09 14:05:41 +08:00
Jarek Radosz 29b35aa64c
DEV: Improve flaky time-sensitive specs (#9141) 2020-03-10 22:13:17 +01:00
David Taylor 9348d2cfdf
PERF: Cache user badge count in user_stats table (#8610)
This means that we no longer need to run a `count()` on the user_badges table when serializing a user
2019-12-30 11:19:59 +00:00
Joffrey JAFFEUX 0d3d2c43a0
DEV: s/\$redis/Discourse\.redis (#8431)
This commit also adds a rubocop rule to prevent global variables.
2019-12-03 10:05:53 +01:00
Daniel Waterworth e219588142 DEV: Prefabrication (test optimization) (#7414)
* Introduced fab!, a helper that creates database state for a group

It's almost identical to let_it_be, except:

 1. It creates a new object for each test by default,
 2. You can disable it using PREFABRICATION=0
2019-05-07 13:12:20 +10:00
Sam Saffron 4ea21fa2d0 DEV: use #frozen_string_literal: true on all spec
This change both speeds up specs (less strings to allocate) and helps catch
cases where methods in Discourse are mutating inputs.

Overall we will be migrating everything to use #frozen_string_literal: true
it will take a while, but this is the first and safest move in this direction
2019-04-30 10:27:42 +10:00
Sam Saffron 5f896ae8f7 PERF: Keep track of when a users first unread is
This optimisation avoids large scans joining the topics table with the
topic_users table.

Previously when a user carried a lot of read state we would have to join
the entire read state with the topics table. This operation would slow down
home page and every topic page. The more read state you accumulated the
larger the impact.

The optimisation helps people who clean up unread, however if you carry
unread from years ago it will only have minimal impact.
2019-04-05 12:44:45 +11:00
Sam 236c755d62 FIX: do not store key tracking last seen time indefinitely
UserStat has some special logic to keep adding time read if repeat calls
are made in intervals less than 100 seconds. This is called regularly
when we update read timings on a topic.

We only need to cache this key in redis for 100 seconds, however previously
we would keep it forever, 1 key per user. This has potential of bloating
a very large amount of keys for no longer active users in redis.
2018-12-03 08:35:26 +11:00
Sam b7023da894 PERF: reduce queries required for post timings
- also freezes a bunch of strings
- bypass active record for an exists query
2018-01-17 15:50:41 +11:00
Guo Xiang Tan 5012d46cbd Add rubocop to our build. (#5004) 2017-07-28 10:20:09 +09:00
Sam 0aed2533ac Revert unread optimisation, has too many edge cases 2017-05-26 09:04:13 -04:00
Sam 29fac1ac18 PERF: improve performance of unread queries
Figuring out what unread topics a user has is a very expensive
operation over time.

Users can easily accumulate 10s of thousands of tracking state rows
(1 for every topic they ever visit)

When figuring out what a user has that is unread we need to join
the tracking state records to the topic table. This can very quickly
lead to cases where you need to scan through the entire topic table.

This commit optimises it so we always keep track of the "first" date
a user has unread topics. Then we can easily filter out all earlier
topics from the join.

We use pg functions, instead of nested queries here to assist the
planner.
2017-05-25 15:07:30 -04:00
Sam Saffron 7303f8f309 FEATURE: first pass at user summary page 2016-01-20 15:14:25 +11:00
Andy Waite 3e50313fdc Prepare for separation of RSpec helper files
Since rspec-rails 3, the default installation creates two helper files:
* `spec_helper.rb`
* `rails_helper.rb`

`spec_helper.rb` is intended as a way of running specs that do not
require Rails, whereas `rails_helper.rb` loads Rails (as Discourse's
current `spec_helper.rb` does).

For more information:

https://www.relishapp.com/rspec/rspec-rails/docs/upgrade#default-helper-files

In this commit, I've simply replaced all instances of `spec_helper` with
`rails_helper`, and renamed the original `spec_helper.rb`.

This brings the Discourse project closer to the standard usage of RSpec
in a Rails app.

At present, every spec relies on loading Rails, but there are likely
many that don't need to. In a future pull request, I hope to introduce a
separate, minimal `spec_helper.rb` which can be used in tests which
don't rely on Rails.
2015-12-01 20:39:42 +00:00
Luciano Sousa b3d769ff4f Update rspec syntax to v3
update rspec syntax to v3

change syntax to rspec v3

oops. fix typo

mailers classes with rspec3 syntax

helpers with rspec3 syntax

jobs with rspec3 syntax

serializers with rspec3 syntax

views with rspec3 syntax

support to rspec3 syntax

category spec with rspec3 syntax
2015-01-05 11:59:30 -03:00
Sam cb0ecd9ff1 PERF: store topic views in a topic view table
* cut down on storage of the work Topic, 3 times per row (in 2 indexes)
* only store one view per user per topic
* only store one view per ip per topic
2014-08-04 19:07:55 +10:00
Robin Ward 3abe84941f FEATURE: Add `new_since` column to `UserStat` so we can reset the "New"
date.
2014-03-03 15:47:00 -05:00
Sam 6befdceabf BUGFIX: UserStat spec was over ambitious with its mocking 2014-01-06 16:50:55 +11:00
Sam 5bf26ec34e large refactor, ship a few columns from the user table into user_stats 2013-10-07 15:04:59 +11:00
Robin Ward fcff4e80d1 New `user_stats` table to keep track of queried information on a user.
This is information that is not usually needed when representing a user
and is in a separate table with a has one relationship to avoid querying
it all the time.
2013-09-11 14:50:26 -04:00