The Limitations of DNS A-Records | Heroku Dev Center
DNS A-records can be used to configure zone apex domains (also called bare, naked, or root domains). These records have serious availability implications when used in environments such as on-premise data-centers, cloud infrastructure services, and platforms like Heroku. For maximum scalability and resiliency applications should avoid using DNS A-records and instead use a DNS provider that supports
Ruby 㧠DNS サーãƒã‚’自作ã™ã‚‹ - diary of a madman
プãƒã‚°ãƒ©ãƒžãƒ–ル㪠DNS サーãƒãŒæ¬²ã—ããªã£ãŸã®ã§ã€ã‚¹ã‚¯ãƒªãƒ—ト系言語㧠DNS ãŒå®Ÿè£…ã§ãã‚‹ã‹ã©ã†ã‹èª¿ã¹ã¦ã¿ãŸã€‚ Perl ã§ã‚ã‚Œã°ã€CPAN ã« Net::DNS::Server ã¨ã„ã†ãƒ¢ã‚¸ãƒ¥ãƒ¼ãƒ«ãŒã‚ã‚‹ã®ã§ã€ã“れを使ãˆã°ç°¡å˜ã« DNS サーãƒãŒå®Ÿè£…ã§ãるよã†ã 。 ã¾ãŸã€æ—¢å˜ã®å®Ÿè£…ã§ã¯ DNS Balance ãŒã€ŒRuby ã§å®Ÿè£…ã•ã‚ŒãŸ DNS サーãƒã€ã ã¨ã„ã†ã“ã¨ãŒåˆ†ã‹ã£ãŸãŒã€ã‚³ãƒ¼ãƒ‰ã‚’見ãŸã¨ã“ã‚ã‚ã¾ã‚Šæµç”¨ã—ãŸããªã‚‹ã‚ˆã†ãªå†…容ã§ã¯ãªã‹ã£ãŸã€‚ ãã“ã§ã€RFC 1034, RFC 1035 ã‚’èªã¿ã¤ã¤*1ã€Ruby ã§è‡ªä½œã—ã¦ã¿ã‚‹ã“ã¨ã«ã—ãŸã€‚ ã§ã€åˆç‰ˆã¨ã—ã¦ä½œã£ãŸã®ãŒä»¥ä¸‹ã®ãƒ—ãƒã‚°ãƒ©ãƒ 。 require 'rubygems' require 'Net/DNS' require 'socket' sock = UDPSocket.new sock.bind('localhost', 10053)
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