| Commit message (Collapse) | Author | Age | Files | Lines |
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This reverts commit bdc1d329d4eea823d07cf010064bd19c07099ff3.
Before:
Calculating -------------------------------------
22.000 i/100ms
-------------------------------------------------
229.700 (± 0.4%) i/s - 1.166k
Total Allocated Object: 9939
After:
Calculating -------------------------------------
24.000 i/100ms
-------------------------------------------------
246.443 (± 0.8%) i/s - 1.248k
Total Allocated Object: 7939
```
begin
require 'bundler/inline'
rescue LoadError => e
$stderr.puts 'Bundler version 1.10 or later is required. Please update your Bundler'
raise e
end
gemfile(true) do
source 'https://rubygems.org'
# gem 'rails', github: 'rails/rails', ref: 'bdc1d329d4eea823d07cf010064bd19c07099ff3'
gem 'rails', github: 'rails/rails', ref: 'd2876141d08341ec67cf6a11a073d1acfb920de7'
gem 'arel', github: 'rails/arel'
gem 'sqlite3'
gem 'benchmark-ips'
end
require 'active_record'
require 'benchmark/ips'
ActiveRecord::Base.establish_connection('sqlite3::memory:')
ActiveRecord::Migration.verbose = false
ActiveRecord::Schema.define do
create_table :users, force: true do |t|
t.string :name, :email
t.boolean :admin
t.timestamps null: false
end
end
class User < ActiveRecord::Base
default_scope { where(admin: true) }
end
admin = true
1000.times do
attributes = {
name: "Lorem ipsum dolor sit amet, consectetur adipiscing elit.",
email: "foobar@email.com",
admin: admin
}
User.create!(attributes)
admin = !admin
end
GC.disable
Benchmark.ips(5, 3) do |x|
x.report { User.all.to_a }
end
key =
if RUBY_VERSION < '2.2'
:total_allocated_object
else
:total_allocated_objects
end
before = GC.stat[key]
User.all.to_a
after = GC.stat[key]
puts "Total Allocated Object: #{after - before}"
```
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vngrs/foreign_key_with_table_name_suffix_and_prefix
Add table name prefix and suffix support for foreign keys
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remove_foreign_key methods
fix tests
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Passing `:from` and `:to` to `change_column_default` makes this command
reversible as user has defined its previous state.
So, instead of having the migration command as:
change_column_default(:posts, :state, "draft")
They can write it as:
change_column_default(:posts, :state, from: nil, to: "draft")
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This used to raise a `IrreversibleMigration` error (since #10437).
However since `remove_index :table, :column` is probably the most basic
use-case we should make it reversible again.
Conflicts:
activerecord/CHANGELOG.md
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Make remove_foreign_key reversible
Conflicts:
activerecord/CHANGELOG.md
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[Robin Dupret & Shunsuke Aida]
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Add schema cache to new connection pool after fork
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Active Record detects when the process has forked and automatically
creates a new connection pool to avoid sharing file descriptors.
If the existing connection pool had a schema cache associated with it,
the new pool should copy it to avoid unnecessarily querying the database
for its schema.
The code to detect that the process has forked is in ConnectionHandler,
but the existing test for it was in the ConnectionManagement test file.
I moved it to the right place while I was writing the new test for this
change.
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Divide methods for handling column options separately
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This patch
- reduces the duplication among the `reference`-family methods.
- better explains all the optians available for `add_reference`.
- redirects to user from `references` to `add_reference`.
Originated by #20184.
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Reducing AR::ConPool's critical (synchronized) section
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Renamed `@reserved_connections` -> `@thread_cached_conns`. New name
clearly conveys the purpose of the cache, which is to speed-up
`#connection` method.
The new `@thread_cached_conns` now also uses `Thread` objects as keys
(instead of previously `Thread.current.object_id`).
Since there is no longer any synchronization around
`@thread_cached_conns`, `disconnect!` and `clear_reloadable_connections!`
methods now pre-emptively obtain ownership (via `checkout`) of all
existing connections, before modifying internal data structures.
A private method `release` has been renamed `thread_conn_uncache` to
clear-up its purpose.
Fixed some brittle `thread.status == "sleep"` tests (threads can go
into sleep even without locks).
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Move post checkout connection verification out of mutex.synchronize.
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kamipo/use_select_rows_instead_of_select_one_in_select_values
Use `select_rows` instead of `select_one` in `select_value`
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`select_one` create `ActiveRecord::Result` instance. It is better to use
`select_rows` instead of `select_one` for performance.
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Apply schema cache dump when creating connections
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The `db:schema:cache:dump` rake task dumps the database schema structure
to `db/schema_cache.dump`. If this file is present, the schema details
are loaded into the currently checked out connection by a railtie while
Rails is booting, to avoid having to query the database for its schema.
The schema cache dump is only applied to the initial connection used to
boot the application though; other connections from the same pool are
created with an empty schema cache, and still have to load the structure
of each table directly from the database.
With this change, a copy of the schema cache is associated with the
connection pool and applied to connections as they are created.
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Correctly dump `:options` on `create_table` for MySQL
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PostgreSQL: `:collation` support for string and text columns
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Some databases like MySQL allow defining collation charset for specific
columns.
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Change the `visit_AddColumn` visiblity for the internal API
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The microseconds handling was already moved to `Quoting#quoted_date`.
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Nodoc validate_index_length! method
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- This method is used only by adapters to validate length of new index names.
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- Added documentation for index_name_exists? and rename_index.
- Also changed rails to \Rails in documentation of
allowed_index_name_length.
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follow up to 107526e809ea2b6de8b2775ecf83e55d60833206
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The `index` option used with `timestamps` should be passed to both
`column` definitions for `created_at` and `updated_at` rather than just
the first.
This was happening because `Hash#delete` is used to extract the `index`
option passed to `timestamps`, thereby mutating the `options` hash
in-place. Now take a copy of the `options` before deleting so that the
original is not modified.
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Fixes #18106
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We should document current behavior, and this is design of API for now.
Closes #17597
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The implementation of the generation of the foreign key name was changed
between Rails 4.2.0 and 4.2.1 from a random to a deterministic behavior,
however the documentation still describes the old randomized behavior.
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Fix AS::Callbacks raising an error when `:run` callback is defined.
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This reverts commit 796cab45561fce268aa74e6587cdb9cae3bb243e.
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It behaves in the same way that the abstract adapter.
[ci skip]
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creating foreign key
test case for use singular table name if pluralize_table_names is setted as false while creating foreign key
refactor references foreign key addition tests
use singular table name while removing foreign key
merge foreign key singular table name methods
remove unnecessary drop table from test
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https://github.com/ruby/ruby/pull/579 - there is a new optimization
since ruby 2.2
Previously regexp patterns were faster (since a string was converted to
regexp underneath anyway). But now string patterns are faster and
better reflect the purpose.
Benchmark.ips do |bm|
bm.report('regexp') { 'this is ::a random string'.gsub(/::/, '/') }
bm.report('string') { 'this is ::a random string'.gsub('::', '/') }
bm.compare!
end
# string: 753724.4 i/s
# regexp: 501443.1 i/s - 1.50x slower
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skip]
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