# ETags(Configure entity tags) を無視する設定
<ifModule mod_headers.c>
    Header unset ETag
</ifModule>
FileETag None

# Enable Keep-Alive を設定
<IfModule mod_headers.c>
    Header set Connection keep-alive
</IfModule>

# MIME Type 追加
<IfModule mime_module>
    AddType text/cache-manifest .appcache
    AddType image/x-icon .ico
    AddType image/svg+xml .svg
    AddType image/webp .webp
    AddType image/avif .avif
    AddType application/x-font-ttf .ttf
    AddType application/x-font-woff .woff
    AddType application/x-font-woff2 .woff2
    AddType application/x-font-opentype .otf
    AddType application/vnd.ms-fontobject .eot
</IfModule>

# プロクシキャッシュの設定（画像とフォントをキャッシュ）
<IfModule mod_headers.c>
    #1年キャッシュ（CSS・JavaScriptなどは、クエリーをつけているからOK）
    <FilesMatch "\.(css|js|ico|jpe?g|png|gif|svg|webp|avif|swf|pdf|ttf|woff|woff2|otf|eot)$">
        Header set Cache-Control "max-age=31536000, public"
    </FilesMatch>
    # プロキシサーバーが間違ったコンテンツを配布しないようにする
    Header append Vary Accept-Encoding env=!dont-vary
</IfModule>

# ブラウザキャッシュの設定
<IfModule mod_headers.c>
<ifModule mod_expires.c>
    ExpiresActive On

    # キャッシュ初期化（1秒に設定）
    ExpiresDefault "access plus 1 seconds"

    # MIME Type ごとの設定
    ExpiresByType text/css "access plus 1 year"
    ExpiresByType text/js "access plus 1 year"
    ExpiresByType text/javascript "access plus 1 year"
    ExpiresByType image/gif "access plus 1 year"
    ExpiresByType image/jpeg "access plus 1 year"
    ExpiresByType image/png "access plus 1 year"
    ExpiresByType image/svg+xml "access plus 1 year"
    ExpiresByType image/webp "access plus 1 year"
    ExpiresByType image/avif "access plus 1 year"
    ExpiresByType application/pdf "access plus 1 year"
    ExpiresByType application/javascript "access plus 1 year"
    ExpiresByType application/x-javascript "access plus 1 year"
    ExpiresByType application/x-shockwave-flash "access plus 1 year"
    ExpiresByType application/x-font-ttf "access plus 1 year"
    ExpiresByType application/x-font-woff "access plus 1 year"
    ExpiresByType application/x-font-woff2 "access plus 1 year"
    ExpiresByType application/x-font-opentype "access plus 1 year"
    ExpiresByType application/vnd.ms-fontobject "access plus 1 year"
</IfModule>
</IfModule>

# Gzip圧縮の設定
<IfModule mod_deflate.c>
    SetOutputFilter DEFLATE

    # 古いブラウザでは無効
    BrowserMatch ^Mozilla/4\.0[678] no-gzip
    BrowserMatch ^Mozilla/4 gzip-only-text/html
    BrowserMatch \bMSIE\s(7|8) !no-gzip !gzip-only-text/html

    # 画像など圧縮済みのコンテンツは再圧縮しない
    SetEnvIfNoCase Request_URI \.(?:gif|jpe?g|png|ico|webp|avif|eot|woff|woff2)$ no-gzip dont-vary

    AddOutputFilterByType DEFLATE text/plain
    AddOutputFilterByType DEFLATE text/html
    AddOutputFilterByType DEFLATE text/xml
    AddOutputFilterByType DEFLATE text/css
    AddOutputFilterByType DEFLATE text/js
    AddOutputFilterByType DEFLATE image/svg+xml
    AddOutputFilterByType DEFLATE application/xml
    AddOutputFilterByType DEFLATE application/xhtml+xml
    AddOutputFilterByType DEFLATE application/rss+xml
    AddOutputFilterByType DEFLATE application/atom_xml
    AddOutputFilterByType DEFLATE application/javascript
    AddOutputFilterByType DEFLATE application/x-javascript
    AddOutputFilterByType DEFLATE application/x-httpd-php
    AddOutputFilterByType DEFLATE application/x-font-ttf
    AddOutputFilterByType DEFLATE application/x-font-opentype
</IfModule>
