From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on dcvr.yhbt.net X-Spam-Level: X-Spam-ASN: AS15169 209.85.128.0/17 X-Spam-Status: No, score=-2.5 required=3.0 tests=BAYES_00, FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS, RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_PASS, UNPARSEABLE_RELAY shortcircuit=no autolearn=no autolearn_force=no version=3.4.2 Received: from mail-wr1-f54.google.com (mail-wr1-f54.google.com [209.85.221.54]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by dcvr.yhbt.net (Postfix) with ESMTPS id 8BD511F4D7 for ; Tue, 26 Apr 2022 20:53:35 +0000 (UTC) Received: by mail-wr1-f54.google.com with SMTP id k2so6672995wrd.5 for ; Tue, 26 Apr 2022 13:53:35 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:subject:date:message-id:user-agent :mime-version; bh=nWinrxU4oPEguXXfgx7r4xNRJdeH+GXVl7mRcXiyWc8=; b=KxxrODfRnbBVk0UlT2r2E4p/996CMun6VopS+PGZwz1+6rhkhuCfYC7OXJcXzrJQ2y 47JcYyUyxG4oiC0W5zihHd0CJVNdxY/oznlgnltMn0aLH6JepDUMxyKU6eUOkahhOoKj S72jGxWjQFhmykSgyyp6T9THTANhWoXW3Xep5VM0OAGz8Xw1c/ej/xGVg1ozIklX2Ulz gpqeXXkhJp9i9ZhoAAaQp3uEMlwRgCqGJ8p3q7QRsQE9Cj7fIOchpWuK8/VvbjwpmH7r i3gUUM5CwP2hEu83dGH3FZFMcENUF6vlZJ4mht2YkhEZPXU43JzOtbBLj0wp4royDrrS ye5A== X-Gm-Message-State: AOAM531+yZDPYG+EjCbpoZUW8CGpY6b1GFXgdYMbNR1WJLvWH7e4zIKO zsvA25yxHJ2ISPaKPBQs82OTS6OAvRM= X-Google-Smtp-Source: ABdhPJzupC6jX0Ow5Rv9iG/nqcaOeeFeokTqzwCWZvZhkF4Ja/xBOWoJEEhEGTpplDyqCbKrumEb6A== X-Received: by 2002:a5d:52c7:0:b0:207:ab91:ac71 with SMTP id r7-20020a5d52c7000000b00207ab91ac71mr19133385wrv.23.1651006413539; Tue, 26 Apr 2022 13:53:33 -0700 (PDT) Received: from rhea.home.vuxu.org (200116b822d425001e1bb5fffe8a9003.dip.versatel-1u1.de. [2001:16b8:22d4:2500:1e1b:b5ff:fe8a:9003]) by smtp.gmail.com with ESMTPSA id q14-20020a1cf30e000000b0038986a18ec8sm85928wmq.46.2022.04.26.13.53.31 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 26 Apr 2022 13:53:32 -0700 (PDT) Received: from localhost (rhea.home.vuxu.org [local]) by rhea.home.vuxu.org (OpenSMTPD) with ESMTPA id fdc2ac1e for ; Tue, 26 Apr 2022 20:53:30 +0000 (UTC) From: Leah Neukirchen To: meta@public-inbox.org Subject: More efficient Atom feeds for public-inbox Date: Tue, 26 Apr 2022 22:53:30 +0200 Message-ID: <87pml3ftx1.fsf@vuxu.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain List-Id: Hi, currently, public-inbox sends the Atom feed with Content-Type: application/atom+xml and no further headers. Since many feed readers poll feeds quite often, this creates noticable traffic and load. Would it make sense to serve the ... field as Last-Modified and/or compute some ETag, so feed readers can use conditional GET? thx, -- Leah Neukirchen https://leahneukirchen.org/