Issue #3054821 by mr.baileys, wiifm, sime, angrytoast, pobster, smustgrave, RichardGaunt, alexpott, Wim Leers, quietone, Berdir, neclimdul, acbramley: Include Cache-Control header on 301 redirects

Issue #3113971 by Spokje, mondrake, acbramley, phenaproxima, andypost, murilohp, mpdonadio, ravi.shankar, pavnish, pifagor, vladbo, JeroenT, voleger, Taran2L: Replace REQUEST_TIME in services

Issue #3410022 by heddn, larowlan, catch: Regression from #3295790 content-length header set earlier than expected

Issue #3214208 by gapple, Akhil Babu, larowlan, smustgrave: FinishResponseSubscriber could create duplicate headers

Issue #3295790 by bradjones1, mstrelan, rpayanm, catch, alexpott, acbramley, longwave, kim.pepper, mfb: Post-response task running (destructable services) are actually blocking; add test coverage and warn for common misconfiguration

Issue #3260401 by idebr, Spokje, Akram Khan, mcdruid, longwave, alexpott: Google is abandoning FLoC - so remove the header

Issue #3274474 by mondrake, longwave, andypost, Spokje, catch, alexpott: Fix 'Access to an undefined property' PHPStan L0 errors

Issue #3232097 by daffie, longwave: [Symfony 6] Add "array" type hint to methods overriding Symfony\Component\EventDispatcher\EventSubscriberInterface::getSubscribedEvents()

Issue #3207567 by Spokje, quietone, guilhermevp, yogeshmpawar, daffie, alexpott: Fix Drupal.Commenting.FunctionComment.MissingParamComment

Issue #3225328 by mxr576, Berdir, longwave: Improve page performance by sorting cache contexts/tags on-demand

Issue #3218139 by gapple, longwave: Stop altering existing Permissions-Policy header in FinishResponseSubscriber

Issue #3209618 by catch, longwave, Neslee Canil Pinto, daffie, andypost, Gábor Hojtsy: [Symfony 6] Symfony\Component\HttpKernel\Event\KernelEvent::isMasterRequest() is deprecated, use isMainRequest() instead

Issue #3209628 by longwave, rachel_norfolk, antiorario, phenaproxima, rootwork, larowlan, neclimdul, Maeglin: Add Permissions-Policy header to block Google FLoC

Issue #3089957 by dww, Krzysztof Domański, Wim Leers, mr.baileys: Set X-Drupal-Cache-Max-Age to aid in debugging #cache fun

Issue #3094398 by martin107, alexpott, andypost, klausi: Update Symfony response and request events to new classes

Issue #3089143 by mr.baileys: FinishResponseSubscriber adds empty Vary-headers on non-cacheable responses

Issue #2712647 by slasher13, klausi, catch, jibran, Manuel Garcia, alexpott, mpdonadio, naveenvalecha, neclimdul, timmillwood, webflo, dawehner, Wim Leers, pounard: Update Symfony components to ~3.2

Issue #2776975 by joelpittet, dawehner, tim.plunkett, xjm, pfrenssen: March 3, 2017: Convert core to array syntax coding standards for Drupal 8.3.x RC phase

Issue #2815845 by dawehner, Wim Leers, alexpott, tedbow, Berdir, swentel, webflo: Importing (deploying) REST resource config entities should automatically do the necessary route rebuilding

Issue #2719695 by alexpott, Mile23: Fix 'Drupal.Classes.ClassDeclaration.CloseBraceAfterBody' coding standard

Issue #2665992 by alexpott, klausi, heykarthikwithu, xjm, tstoeckler: @file is not required for classes, interfaces and traits

Issue #2527126 by Wim Leers, dawehner, effulgentsia, anavarre, janusman, Fabianx, alexpott, hass, catch, Berdir, znerol: Only send X-Drupal-Cache-Tags and -Contexts headers when developer explicitly enables them

Issue #2476407 by borisson_, hussainweb, znerol, Fabianx, Wim Leers, dawehner, Crell, Berdir: Use CacheableResponseInterface to determine which responses should be cached

Issue #2541336 by borisson_: Docblock cleanup: missing backslash for FilterResponseEvent in FinishResponseSubscriber

Revert "Issue #2527126 by dawehner, Wim Leers, hass: Only send cache context/tags if frontend proxy exists"

This reverts commit 7115108c.

Issue #2512382 by Wim Leers: Follow-up for #2407195: #attached['http_header'] being added to Response in two places

Issue #1392754 by tss, justAChris, jhodgdon: Comply with new documentation standards for @file for namespaced class files

Issue #2483781 by borisson_, rbayliss, cilefen, mitalimehta, joshi.rohit100: Move cache contexts classes from \Drupal\Core\Cache to \Drupal\Core\Cache\Context

Issue #2471405 by tompagabor: When not logged Drupal\Core\EventSubscriber\FinishResponseSubscriber->setExpiresNoCache() causes a PHP warning because of an invalid timezone.

Issue #2463009 by Wim Leers: Introduce CacheableResponseInterface: consolidate ways of setting X-Drupal-Cache-Tags/Contexts headers

Issue #2472281 by pwolanin: 404/403 responses for non-existing nodes are cached in Page Cache/reverse proxy, are not invalidated when the node is created

Issue #2468151 by lhangea, rpayanm, Palashvijay4O: Rename the CacheContexts service to CacheContextsManager