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Clarify expires_now documentation
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[ci skip]
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Style/SpaceBeforeBlockBraces
Style/SpaceInsideBlockBraces
Style/SpaceInsideHashLiteralBraces
Fix all violations in the repository.
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The current code base is not uniform. After some discussion,
we have chosen to go with double quotes by default.
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Add a missing capital letter and avoid using absolute links to the
API because they may refer to out-dated documentation on the Edge
site.
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[ci skip]
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* Introduce `Response#strong_etag=` and `#weak_etag=` and analogous options
for `fresh_when` and `stale?`. `Response#etag=` sets a weak ETag.
Strong ETags are desirable when you're serving byte-for-byte identical
responses that support Range requests, like PDFs or videos (typically
done by reproxying the response from a backend storage service).
Also desirable when fronted by some CDNs that support strong ETags
only, like Akamai.
* No longer strips quotes (`"`) from ETag values before comparing them.
Quotes are significant, part of the ETag. A quoted ETag and an unquoted
one are not the same entity.
* Support `If-None-Match: *`. Rarely useful for GET requests; meant
to provide some optimistic concurrency control for PUT requests.
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Benchmark.ips do |x|
x.report('Time.parse') { Time.parse('2011-01-01') }
x.report('Time.new') { Time.new(2011, 1, 1) }
end
Calculating -------------------------------------
Time.parse 6.640k i/100ms
Time.new 15.082k i/100ms
-------------------------------------------------
Time.parse 71.915k (± 3.1%) i/s - 365.200k
Time.new 167.645k (± 3.3%) i/s - 844.592k
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Since all controller instances are required to have a request and
response object, RackDelegation is no longer needed (we always have to
delegate to the response)
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spelling fix [ci skip]
example to be consistent [ci skip]
grammatical fix
typo fixes [ci skip]
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Add http_cache_forever to ActionController, so we can cache results
forever.
Things like static pages are a good candidate for this type of caching.
This cache only controls caching headers, so it is up to the browser to
cache those requests.
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The methods `fresh_when` and `stale?` from ActionController::ConditionalGet
accept a single record as a short form for a hash. For instance
```ruby
def show
@article = Article.find(params[:id])
fresh_when(@article)
end
```
is just a short form for:
```ruby
def show
@article = Article.find(params[:id])
fresh_when(etag: @article, last_modified: @article.created_at)
end
```
This commit extends `fresh_when` and `stale?` to also accept a collection
of records, so that a short form similar to the one above can be used in
an `index` action. After this commit, the following code:
```ruby
def index
@article = Article.all
fresh_when(etag: @articles, last_modified: @articles.maximum(:created_at))
end
```
can be simply written as:
```ruby
def index
@article = Article.all
fresh_when(@articles)
end
```
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PR #18772 changed the parameters of `stale?` to use `kwargs`.
[As for this comment](https://github.com/rails/rails/pull/18872/files#r24456288)
the default value for the `etag` parameter should be `record`, not `nil`.
This commit fixes the code and introduces a test that:
- passed before #18872
- fails on the current master (after #18772)
- passes again after setting the default value of `etag` to `record`.
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It is clearer and closer to reality to use `@article.updated_at` as
the `:last_modified` parameter of `fresh_when` and `stale?`.
Using `@article.created_at` would result in the cache never expiring,
since the creation timestamp never changes.
[ci skip]
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New default: the template digest is automatically included in your ETags.
When you call `fresh_when @post`, the digest for `posts/show.html.erb`
is mixed in so future changes to the HTML will blow HTTP caches for you.
This makes it easy to HTTP-cache many more of your actions.
If you render a different template, you can now pass the `:template`
option to include its digest instead:
fresh_when @post, template: 'widgets/show'
Pass `template: false` to skip the lookup. To turn this off entirely, set:
config.action_controller.etag_with_template_digest = false
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* core_ext/object/blank
* concern
* core_ext/class/attribute
* deprecation
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Sometimes, on Mac OS X, programmers accidentally press Option+Space
rather than just Space and don’t see the difference. The problem is
that Option+Space writes a non-breaking space (0XA0) rather than a
normal space (0x20).
This commit removes all the non-breaking spaces inadvertently
introduced in the comments of the code.
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computation *Jeremy Kemper/DHH*
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max-stale is a cache request header.
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Ensure Date header on expires_in
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#expires_in
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fresh_when/stale? conditional get methods from Action Pack"
Needless indirection with no added value.
This reverts commit 535853e83b9092078035a5abb2aa242fba815c05.
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fresh_when/stale? conditional get methods from Action Pack
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Time#utc does not need to be called when passing the object to :last_modified since it is called internally to Rails.
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their module locations
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