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Sticky sessions (session persistence) maintain the same proxy IP for multiple requests. Key Features:
  1. Duration:
    • Default TTL: 15 minutes
    • Maximum TTL: 1440 minutes (24 hours)
    • Customizable via sessionttl parameter
    • Static TTL: expires at creation time + TTL, not extended by activity
  2. Session Modes:
    • Strict Mode (Default): Any error immediately rotates to a new node
    • Flex Mode: Tolerates up to N consecutive errors before rotating (default 15, customizable via sessionerr)
    • No-Rotate Mode: Never rotates on errors; returns 472 (tunnel error) or 475 (node offline) instead
For more details, refer to the sticky sessions documentation.