{"id":17036,"date":"2025-04-17T08:48:18","date_gmt":"2025-04-17T15:48:18","guid":{"rendered":"https:\/\/www.couchbase.com\/blog\/?p=17036"},"modified":"2025-06-13T22:04:18","modified_gmt":"2025-06-14T05:04:18","slug":"high-availability-automatic-failover-app-services","status":"publish","type":"post","link":"https:\/\/www.couchbase.com\/blog\/ko\/high-availability-automatic-failover-app-services\/","title":{"rendered":"\uc571 \uc11c\ube44\uc2a4\ub97c \uc704\ud55c \uc790\ub3d9 \uc7a5\uc560 \uc870\uce58\ub85c \uace0\uac00\uc6a9\uc131 \ubcf4\uc7a5"},"content":{"rendered":"

\ucd5c\uc2e0 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc5d0\uc11c\ub294 \uc9c0\uc18d\uc801\uc778 \uc5f0\uacb0\uc774 \ud575\uc2ec\uc774\uba70, \ud2b9\ud788 \ubc31\uc5d4\ub4dc \uc11c\ube44\uc2a4\uc5d0 \uc758\uc874\ud558\ub294 \ubaa8\ubc14\uc77c \uc571\uc758 \uacbd\uc6b0 \ub354\uc6b1 \uadf8\ub807\uc2b5\ub2c8\ub2e4. \uc774 \ube14\ub85c\uadf8\uc5d0\uc11c\ub294 \uc571 \uc11c\ube44\uc2a4 \uc11c\ubc84\uc758 \uc0c1\ud0dc\ub97c \ubaa8\ub2c8\ud130\ub9c1\ud558\uace0 \ud544\uc694\ud55c \uacbd\uc6b0 \ubcf4\uc870 \uc11c\ubc84\ub85c \uc790\ub3d9 \ud398\uc77c\uc624\ubc84\ud558\ub294 Python \uae30\ubc18 \uc194\ub8e8\uc158\uc744 \uc0b4\ud3b4\ubcf4\uaca0\uc2b5\ub2c8\ub2e4. \uc774 \uc0d8\ud50c \ucf54\ub4dc\ub294 HTTP \uc0c1\ud0dc \ud655\uc778\uacfc WebSocket \uc5f0\uacb0 \uc5d4\ub4dc\ud3ec\uc778\ud2b8\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc774 \ud56d\uc0c1 \uc815\uc0c1 \uc11c\ube44\uc2a4\uc5d0 \uc5f0\uacb0\ub418\ub3c4\ub85d \ud569\ub2c8\ub2e4.<\/span><\/p>\n

\uac1c\uc694<\/h2>\n

\uc774 \uc194\ub8e8\uc158\uc5d0\ub294 \ub450 \uac00\uc9c0 \uc720\ud615\uc758 \uc5d4\ub4dc\ud3ec\uc778\ud2b8\uac00 \ud3ec\ud568\ub429\ub2c8\ub2e4:<\/span><\/p>\n

    \n
  1. \n
      \n
    1. \uc0c1\ud0dc \ud655\uc778 URL<\/b>\n
        \n
      • \uc774\ub7ec\ud55c \uc5d4\ub4dc\ud3ec\uc778\ud2b8(\uc608, <\/span>https:\/\/...\/_ping<\/code><\/span>)\ub97c \uc0ac\uc6a9\ud558\uc5ec \ud3f4\ub9c1\ud569\ub2c8\ub2e4. HTTP <\/em><\/span>HEAD<\/span><\/em> \uc694\uccad.<\/span><\/li>\n
      • \uc571 \uc11c\ube44\uc2a4 \uc11c\ubc84\uac00 \uc815\uc0c1\uc778\uc9c0 \ud655\uc778\ud569\ub2c8\ub2e4.<\/span><\/li>\n<\/ul>\n<\/li>\n
      • \uc5f0\uacb0 \uc5d4\ub4dc\ud3ec\uc778\ud2b8<\/b>\n
          \n
        • \uc6f9\uc18c\ucf13 URL(\uc608, <\/span>wss:\/\/...\/primary<\/code><\/span>)\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc774 \ubc31\uc5d4\ub4dc\uc640 \uc0c1\ud638 \uc791\uc6a9\ud558\ub294 \ub370 \uc0ac\uc6a9\ud569\ub2c8\ub2e4.<\/span><\/li>\n
        • \ud65c\uc131 \uc5f0\uacb0 \uc5d4\ub4dc\ud3ec\uc778\ud2b8\ub294 \uc0c1\ud0dc \ud655\uc778 \uacb0\uacfc\uc5d0 \ub530\ub77c \uc5c5\ub370\uc774\ud2b8\ub429\ub2c8\ub2e4.<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n

          \uae30\ubcf8 \uc11c\ubc84\uc758 \uc0c1\ud0dc \ud655\uc778\uc5d0 \uc5f0\uc18d\uc801\uc73c\ub85c \uc2e4\ud328\ud558\uba74 \uc7a5\uc560 \uc870\uce58 \ub85c\uc9c1\uc774 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc758 \uc5f0\uacb0\uc744 \ubcf4\uc870 \uc11c\ubc84\ub85c \uc804\ud658\ud569\ub2c8\ub2e4.<\/span><\/p>\n

          \ucf54\ub4dc \uc0c1\uc138 \uc815\ubcf4<\/h2>\n

          \uc544\ub798\ub294 \uc778\ub77c\uc778 \uc8fc\uc11d\uacfc \uc790\uc138\ud55c \uc124\uba85\uc774 \ud3ec\ud568\ub41c \uc804\uccb4 \ucf54\ub4dc\uc785\ub2c8\ub2e4:<\/span><\/p>\n

          import logging\r\nimport threading\r\nimport requests\r\nfrom time import sleep\r\n\r\n# Configure logging to show time-stamped messages at INFO level.\r\nlogging.basicConfig(level=logging.INFO, format='%(asctime)s %(levelname)s: %(message)s')\r\n\r\n# --------------------------------------\r\n# Health Check URLs (App Service Servers)\r\n# --------------------------------------\r\n# These URLs are used for health checking the servers by sending HEAD requests.\r\nhealth_check_urls = {\r\n\u00a0\u00a0\u00a0\u00a0\"primary\": \"https:\/\/XXXXXXXXXXXXXX.apps.cloud.couchbase.com:4984\/_ping\",\r\n\u00a0\u00a0\u00a0\u00a0\"secondary\": \"https:\/\/XXXXXXXXXXXXXX.apps.cloud.couchbase.com:4984\/_ping\"\r\n}\r\n\r\n# -------------------------------------\r\n# Connection Endpoints (WebSocket URLs)\r\n# -------------------------------------\r\n# These endpoints are what your application actually uses for connections.\r\nconnection_urls = {\r\n\u00a0\u00a0\u00a0\u00a0\"primary\": \"wss:\/\/XXXXXXXXXXXXXX.apps.cloud.couchbase.com:4984\/primary\",\r\n\u00a0\u00a0\u00a0\u00a0\"secondary\": \"wss:\/\/XXXXXXXXXXXXXX.apps.cloud.ucouchbase.com:4984\/secondary\"\r\n}\r\n\r\n# The variable `active_cluster` tracks which server is currently active.\r\nactive_cluster = \"primary\"\r\n\r\n# This variable holds the actual WebSocket URL used by your application.\r\nactive_connection_url = connection_urls[active_cluster]\r\n\r\ndef is_cluster_healthy(url):\r\n\u00a0\u00a0\u00a0\u00a0\"\"\"\r\n\u00a0\u00a0\u00a0\u00a0Perform a health check using a HEAD request against the provided URL.\r\n\u00a0\u00a0\u00a0\u00a0Returns True if the response status is 200; otherwise, returns False.\r\n\u00a0\u00a0\u00a0\u00a0Logs the status code and headers for troubleshooting.\r\n\u00a0\u00a0\u00a0\u00a0\"\"\"\r\n\u00a0\u00a0\u00a0\u00a0try:\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0response = requests.head(url, timeout=5)\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0logging.info(f\"Health Check Response for {url}\")\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0logging.info(f\"\u00a0 Status Code: {response.status_code}\")\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0logging.info(\"\u00a0 Headers:\")\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0for header, value in response.headers.items():\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0logging.info(f\"\u00a0 \u00a0 {header}: {value}\")\r\n\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if response.status_code == 200:\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0logging.info(f\"{url} is healthy!\")\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return True\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0else:\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0logging.warning(f\"{url} might be unhealthy or unreachable.\")\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return False\r\n\u00a0\u00a0\u00a0\u00a0except requests.exceptions.RequestException as e:\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0logging.error(f\"Health check failed for {url}: {e}\")\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return False\r\n\r\ndef health_check_worker():\r\n\u00a0\u00a0\u00a0\u00a0\"\"\"\r\n\u00a0\u00a0\u00a0\u00a0A background worker that checks the health of the active server every 3 seconds.\r\n\u00a0\u00a0\u00a0\u00a0If the active server fails health checks for more than 9 consecutive times,\r\n\u00a0\u00a0\u00a0\u00a0the worker attempts to switch to the other server.\r\n\u00a0\u00a0\u00a0\u00a0\"\"\"\r\n\u00a0\u00a0\u00a0\u00a0global active_cluster\r\n\u00a0\u00a0\u00a0\u00a0global active_connection_url\r\n\r\n\u00a0\u00a0\u00a0\u00a0consecutive_failures = 0\r\n\r\n\u00a0\u00a0\u00a0\u00a0while True:\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0sleep(3)\u00a0 # Wait 3 seconds between checks.\r\n\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0# Use the HTTP health check endpoint for the active cluster.\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0current_health_url = health_check_urls[active_cluster]\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0logging.info(f\"Health check: Checking {active_cluster} at {current_health_url}...\")\r\n\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if is_cluster_healthy(current_health_url):\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0consecutive_failures = 0\u00a0 # Reset counter if healthy.\r\n \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0else:\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0consecutive_failures += 1\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0logging.warning(f\"{active_cluster} health check failed {consecutive_failures} time(s).\")\r\n\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0# If failures exceed 9 consecutive attempts, try to fail over.\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if consecutive_failures > 9:\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0logging.error(f\"{active_cluster} is considered down. Attempting to fail over...\")\r\n\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0# Determine the new active cluster.\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0new_cluster = \"secondary\" if active_cluster == \"primary\" else \"primary\"\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0new_health_url = health_check_urls[new_cluster]\r\n\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0# Check if the new cluster is healthy.\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if is_cluster_healthy(new_health_url):\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0active_cluster = new_cluster\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0# Update the connection endpoint.\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0active_connection_url = connection_urls[new_cluster]\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0logging.warning(f\"Switched active cluster to {new_cluster}.\")\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0logging.warning(f\"New WebSocket connection endpoint: {active_connection_url}\")\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0else:\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0logging.critical(\"Both clusters appear to be down!\")\r\n\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0consecutive_failures = 0\u00a0 # Reset the failure counter after the attempt.\r\n\r\ndef main():\r\n\u00a0\u00a0\u00a0\u00a0\"\"\"\r\n\u00a0\u00a0\u00a0\u00a0Main function to start the health-check worker in a background thread.\r\n\u00a0\u00a0\u00a0\u00a0Keeps the script running indefinitely until interrupted.\r\n\u00a0\u00a0\u00a0\u00a0\"\"\"\r\n\u00a0\u00a0\u00a0\u00a0thread = threading.Thread(target=health_check_worker, daemon=True)\r\n\u00a0\u00a0\u00a0\u00a0thread.start()\r\n\r\n\u00a0\u00a0\u00a0\u00a0logging.info(\"Health check worker started. Press Ctrl+C to exit.\")\r\n\u00a0\u00a0\u00a0\u00a0logging.info(f\"Application will initially connect to: {active_connection_url}\")\r\n\r\n\u00a0\u00a0\u00a0\u00a0try:\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0while True:\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0sleep(1)\u00a0 # Main thread remains alive.\r\n\u00a0\u00a0\u00a0\u00a0except KeyboardInterrupt:\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0logging.info(\"Shutting down health check script.\")\r\n\r\nif __name__ == \"__main__\":\r\n\u00a0\u00a0\u00a0\u00a0main()<\/pre>\n
          \uc8fc\uc694 \uae30\uc220 \ud3ec\uc778\ud2b8<\/h2>\n
            \n
          • \n
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            • \uc571 \uc11c\ube44\uc2a4 \uc11c\ubc84\uc758 \uc0c1\ud0dc \ud655\uc778:<\/b>
              \n<\/b>\uc774 \ucf54\ub4dc\ub294 <\/span>\uc0c1\ud0dc \ud655\uc778 \uc5d4\ub4dc\ud3ec\uc778\ud2b8<\/b> (\ubaa8\ub2c8\ud130\ub9c1\uc5d0 \uc0ac\uc6a9\ub428)\uc5d0\uc11c <\/span>\uc5f0\uacb0 \uc5d4\ub4dc\ud3ec\uc778\ud2b8<\/b> (\uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc5d0\uc11c \uc0ac\uc6a9). \uc774\ub97c \ud1b5\ud574 \uc548\uc815\uc801\uc778 \uc5f0\uacb0 \uc5d4\ub4dc\ud3ec\uc778\ud2b8\ub97c \uc720\uc9c0\ud558\uba74\uc11c \uc11c\ubc84 \uc0c1\ud0dc\ub97c \ub3c5\ub9bd\uc801\uc73c\ub85c \ud655\uc778\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/li>\n
            • HTTP \ud5e4\ub4dc \uc694\uccad:<\/b>
              \n<\/b>\uc0ac\uc6a9 <\/span>HEAD<\/span> \uc694\uccad\uc5d0 \ub300\ud55c<\/span>\/_ping<\/code><\/span>\u00a0\uc5d4\ub4dc\ud3ec\uc778\ud2b8\ub294 \ub370\uc774\ud130 \uc804\uc1a1\uc744 \ucd5c\uc18c\ud654\ud558\ub294 \ub3d9\uc2dc\uc5d0 \uc9c4\ub2e8\uc744 \uc704\ud55c \uc0c1\ud0dc \ucf54\ub4dc\uc640 \ud5e4\ub354\ub97c \uc81c\uacf5\ud569\ub2c8\ub2e4.<\/span><\/li>\n
            • \ubc31\uadf8\ub77c\uc6b4\ub4dc \uc2a4\ub808\ub4dc:<\/b>
              \n<\/b>\uadf8\ub9ac\uace0 <\/span>\uac74\uac15_\uccb4\ud06c_\uadfc\ub85c\uc790<\/code><\/span> \ub294 \uc790\uccb4 \ub370\ubaac \uc2a4\ub808\ub4dc\uc5d0\uc11c \uc2e4\ud589\ub418\ubbc0\ub85c \uba54\uc778 \uc560\ud50c\ub9ac\ucf00\uc774\uc158 \uc2a4\ub808\ub4dc\ub97c \ucc28\ub2e8\ud558\uc9c0 \uc54a\uace0\ub3c4 \uc9c0\uc18d\uc801\uc778 \uc0c1\ud0dc \ubaa8\ub2c8\ud130\ub9c1\uc774 \uac00\ub2a5\ud569\ub2c8\ub2e4.<\/span><\/li>\n
            • \uc7a5\uc560 \uc870\uce58 \ub85c\uc9c1:<\/b>\n
                \n
              • \uce74\uc6b4\ud130(<\/span>\uc5f0\uc18d_\uc2e4\ud328<\/code><\/span>)\ub294 \uc5f0\uc18d\uc801\uc778 \uc2e4\ud328\ub97c \ucd94\uc801\ud569\ub2c8\ub2e4.<\/span><\/li>\n
              • \ud69f\uc218\uac00 \uc124\uc815\ub41c \uc784\uacc4\uac12(9\ud68c \uc2e4\ud328)\uc744 \ucd08\uacfc\ud558\uba74 \uc2a4\ud06c\ub9bd\ud2b8\uc5d0\uc11c \ub300\uccb4 \uc11c\ubc84\uc758 \uc0c1\ud0dc\ub97c \ud655\uc778\ud558\uc5ec \uc7a5\uc560 \uc870\uce58\ub97c \uc2dc\ub3c4\ud569\ub2c8\ub2e4.<\/span><\/li>\n
              • \ubcf4\uc870 \uc11c\ubc84\uc5d0\uc11c \uc0c1\ud0dc \ud655\uc778\uc5d0 \uc131\uacf5\ud558\uba74 \ud65c\uc131 \uc5f0\uacb0 \uc5d4\ub4dc\ud3ec\uc778\ud2b8\uac00 \uc5c5\ub370\uc774\ud2b8\ub429\ub2c8\ub2e4.<\/span><\/li>\n<\/ul>\n<\/li>\n
              • \ub85c\uae45:<\/b>
                \n<\/b>\uc0c1\uc138 \ub85c\uae45\uc740 HTTP \uc751\ub2f5 \uc0c1\ud0dc, \ud5e4\ub354, \uc7a5\uc560 \uc870\uce58 \uc774\ubca4\ud2b8 \ub4f1 \uc0c1\ud0dc \ud655\uc778 \ud504\ub85c\uc138\uc2a4\uc5d0 \ub300\ud55c \uc778\uc0ac\uc774\ud2b8\ub97c \uc81c\uacf5\ud569\ub2c8\ub2e4. \uc774\ub294 \ubb38\uc81c \ud574\uacb0 \ubc0f \ubaa8\ub2c8\ud130\ub9c1\uc5d0 \ub3c4\uc6c0\uc774 \ub429\ub2c8\ub2e4.<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n
                \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc5d0 \ub9de\uac8c \uc870\uc815\ud558\uae30<\/h2>\n
                  \n
                • \n
                    \n
                  • \uc774 \ucf54\ub4dc\ub97c \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc758 \uc694\uad6c \uc0ac\ud56d\uc5d0 \ub9de\uac8c Swift, Kotlin \ub4f1 \uc6d0\ud558\ub294 \ud504\ub85c\uadf8\ub798\ubc0d \uc5b8\uc5b4\ub85c \uc27d\uac8c \ubc88\uc5ed\ud558\uace0 \uc870\uc815\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/li>\n
                  • \uc774 \uc2a4\ud06c\ub9bd\ud2b8\ub098 \ub85c\uc9c1\uc744 \ub2e4\uc74c\uacfc \uac19\uc774 \ud1b5\ud569\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. <\/span>\ubaa8\ubc14\uc77c \ucf54\ub4dc<\/b> (iOS\/\uc548\ub4dc\ub85c\uc774\ub4dc) \ub610\ub294 <\/span>\ubc31\uc5d4\ub4dc \uc11c\ube44\uc2a4<\/b> \ub97c \uc5c5\ub370\uc774\ud2b8\ud558\ub294 \ud65c\uc131<\/em>\u00a0\uc5d4\ub4dc\ud3ec\uc778\ud2b8.<\/span><\/li>\n
                  • iOS \ub610\ub294 Android\ub97c \uc0ac\uc6a9\ud558\ub294 \uacbd\uc6b0 \uc774 \ucf54\ub4dc\ub97c \uc2e4\ud589\ud558\ub294 \ube48\ub3c4\uc640 \uc704\uce58\ub97c \uace0\ub824\ud558\uc138\uc694. \uc608\ub97c \ub4e4\uc5b4 \ubc31\uadf8\ub77c\uc6b4\ub4dc \uc791\uc5c5\uc774\ub098 \ud478\uc2dc \uc54c\ub9bc\uc740 \ubaa8\ubc14\uc77c \ucee8\ud14d\uc2a4\ud2b8\uc5d0\uc11c \uc0c1\ud0dc \ud655\uc778\uc744 \ud2b8\ub9ac\uac70\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/li>\n
                  • \ub9c8\uc774\ud06c\ub85c\uc11c\ube44\uc2a4 \uc544\ud0a4\ud14d\ucc98\ub97c \uc0ac\uc6a9\ud558\ub294 \uacbd\uc6b0, \uc774 \uc7a5\uc560 \uc870\uce58 \ub85c\uc9c1\uc744 \uc18c\uaddc\ubaa8 \uc11c\ube44\uc2a4\uc5d0\uc11c \uc2e4\ud589\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ud604\uc7ac \ud65c\uc131 URL<\/em>\u00a0\ub97c \ubaa8\ubc14\uc77c \uc571\uc5d0 \ucd94\uac00\ud558\uc5ec \ud56d\uc0c1 \uc62c\ubc14\ub978 WSS \uc5d4\ub4dc\ud3ec\uc778\ud2b8\uc5d0 \uc5f0\uacb0\ub418\ub3c4\ub85d \ud569\ub2c8\ub2e4.<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n
                    \uacb0\ub860<\/h2>\n
                    \uc774 \uc0d8\ud50c \ucf54\ub4dc\ub294 \uae30\ubcf8 \uc11c\ubc84\uc5d0 \uc5f0\uacb0\ud560 \uc218 \uc5c6\uac8c \ub418\uba74 \uc790\ub3d9\uc73c\ub85c \ubc31\uc5c5 \uc11c\ubc84\ub85c \uc7a5\uc560 \uc870\uce58\ud558\uc5ec \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc758 \uace0\uac00\uc6a9\uc131\uc744 \ubcf4\uc7a5\ud558\ub294 \uac04\ub2e8\ud558\uba74\uc11c\ub3c4 \uac15\ub825\ud55c \uba54\ucee4\ub2c8\uc998\uc744 \uc81c\uacf5\ud569\ub2c8\ub2e4. \uc5f0\uacb0 \uc5d4\ub4dc\ud3ec\uc778\ud2b8\uc5d0\uc11c \uc0c1\ud0dc \uac80\uc0ac\ub97c \ubd84\ub9ac\ud568\uc73c\ub85c\uc368 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc774 \ud56d\uc0c1 WebSocket\uc744 \ud1b5\ud574 \uc815\uc0c1 \uc11c\ubc84\uc5d0 \uc5f0\uacb0\ub418\ub3c4\ub85d \ubcf4\uc7a5\ud569\ub2c8\ub2e4.<\/span><\/p>\n
                    \ud504\ub85c\ub355\uc158 \ud658\uacbd\uc5d0\uc11c\ub294 \ud2b9\uc815 \uc694\uad6c \uc0ac\ud56d, \ub124\ud2b8\uc6cc\ud06c \uc870\uac74 \ubc0f \ubcf4\uc548 \uc815\ucc45\uc5d0 \ub9de\uac8c \ub85c\uc9c1\uc744 \uc870\uc815\ud558\uace0 \ud655\uc7a5\ud574\uc57c \ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n
                    \ubaa8\ubc14\uc77c \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc774\ub098 \ubc31\uc5d4\ub4dc \uc11c\ube44\uc2a4\uc5d0 \uc774 \ub85c\uc9c1\uc744 \uad6c\ud604\ud558\uba74 \uac00\ub3d9 \uc2dc\uac04\uacfc \ubcf5\uc6d0\ub825\uc744 \ud06c\uac8c \uac1c\uc120\ud558\uc5ec \uc608\uae30\uce58 \uc54a\uc740 \uc11c\ube44\uc2a4 \uc911\ub2e8 \uc911\uc5d0\ub3c4 \uc0ac\uc6a9\uc790\uac00 \uacc4\uc18d \uc5f0\uacb0 \uc0c1\ud0dc\ub97c \uc720\uc9c0\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n
                     <\/p>","protected":false},"excerpt":{"rendered":"
                    In modern applications, continuous connectivity is key\u2014especially for mobile apps relying on backend services. In this blog, we\u2019ll walk through a Python-based solution that monitors the health of your app service servers and automatically fails over to a secondary server […]<\/p>","protected":false},"author":85152,"featured_media":17039,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[10130,1815,2225,9139],"tags":[2126,1782],"ppma_author":[9941,10067],"class_list":["post-17036","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-app-services","category-best-practices-and-tutorials","category-cloud","category-python","tag-high-availability","tag-websocket"],"acf":[],"yoast_head":"\nEnsuring High Availability with Automatic Failover for App Services<\/title>\n<meta name=\"description\" content=\"Boost app reliability with Python-based automatic failover. Monitor server health and switch WebSocket connections seamlessly to keep users connected.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.couchbase.com\/blog\/ko\/high-availability-automatic-failover-app-services\/\" \/>\n<meta property=\"og:locale\" content=\"ko_KR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ensuring High Availability with Automatic Failover for App Services\" \/>\n<meta property=\"og:description\" content=\"Boost app reliability with Python-based automatic failover. Monitor server health and switch WebSocket connections seamlessly to keep users connected.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.couchbase.com\/blog\/ko\/high-availability-automatic-failover-app-services\/\" \/>\n<meta property=\"og:site_name\" content=\"The Couchbase Blog\" \/>\n<meta property=\"article:published_time\" content=\"2025-04-17T15:48:18+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-06-14T05:04:18+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.couchbase.com\/blog\/wp-content\/uploads\/sites\/1\/2025\/04\/blog-high-availability-app-services.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2400\" \/>\n\t<meta property=\"og:image:height\" content=\"1256\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Nishant Bhatia - Cloud Architect, Rob Hadaway, Sr. Solutions Architect\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Nishant Bhatia - Cloud Architect\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3\ubd84\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.couchbase.com\/blog\/high-availability-automatic-failover-app-services\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.couchbase.com\/blog\/high-availability-automatic-failover-app-services\/\"},\"author\":{\"name\":\"Nishant Bhatia - Cloud Architect\",\"@id\":\"https:\/\/www.couchbase.com\/blog\/#\/schema\/person\/14cc749fce6a626f4e615a0d53efb709\"},\"headline\":\"Ensuring High Availability with Automatic Failover for App Services\",\"datePublished\":\"2025-04-17T15:48:18+00:00\",\"dateModified\":\"2025-06-14T05:04:18+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.couchbase.com\/blog\/high-availability-automatic-failover-app-services\/\"},\"wordCount\":536,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.couchbase.com\/blog\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.couchbase.com\/blog\/high-availability-automatic-failover-app-services\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.couchbase.com\/blog\/wp-content\/uploads\/sites\/1\/2025\/04\/blog-high-availability-app-services.jpg\",\"keywords\":[\"High Availability\",\"websocket\"],\"articleSection\":[\"App Services\",\"Best Practices and Tutorials\",\"Couchbase Capella\",\"Python\"],\"inLanguage\":\"ko-KR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.couchbase.com\/blog\/high-availability-automatic-failover-app-services\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.couchbase.com\/blog\/high-availability-automatic-failover-app-services\/\",\"url\":\"https:\/\/www.couchbase.com\/blog\/high-availability-automatic-failover-app-services\/\",\"name\":\"Ensuring High Availability with Automatic Failover for App Services\",\"isPartOf\":{\"@id\":\"https:\/\/www.couchbase.com\/blog\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.couchbase.com\/blog\/high-availability-automatic-failover-app-services\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.couchbase.com\/blog\/high-availability-automatic-failover-app-services\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.couchbase.com\/blog\/wp-content\/uploads\/sites\/1\/2025\/04\/blog-high-availability-app-services.jpg\",\"datePublished\":\"2025-04-17T15:48:18+00:00\",\"dateModified\":\"2025-06-14T05:04:18+00:00\",\"description\":\"Boost app reliability with Python-based automatic failover. 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