| Tag Name | negative_dns_ttl |
| Usage | negative_dns_ttl time-units |
Description
Time-to-Live (TTL) for negative caching of failed DNS lookups
| Default | negative_dns_ttl 5 minutes |
Squid Proxy ConfigurationOpen Source linux proxy configuration |
Pages
- Configuration Manual 2.4
- Network Parameters
- Cache Directories
- Administrative Parameters
- Options For Tuning Squid Cache
- Timeouts
- Cache Size
- httpd-Accelerator Options
- Neighbour Selection Algorithm
- Cache Registration Service
- External Functions
- ftp_user
- ftp_list_width
- ftp_passive
- cache_dns_program
- dns_children
- dns_retransmit_interval
- dns_timeout
- dns_defnames
- dns_nameservers
- diskd_program
- inlinkd_program
- pinger_program
- redirect_program
- redirect_children
- redirect_rewrites_host_header
- redirector_access
- authenticate_program
- authenticate_children
- authenticate_ttl
- authenticate_ip_ttl
- authenticate_ip_ttl_is_strict
- Access Controls
- Delaypool Parameters
- delay_pools
- delay_class
- delay_access
- delay_parameters
- delay_initial_bucket_level
- incoming_icp_average
- max_open_disk_fds
- offline_mode
- uri_whitespace
- broken_posts
- mcast_miss_addr
- mcast_miss_ttl
- mcast_miss_port
- mcast_miss_encode_key
- nonhierarchical_direct
- prefer_direct
- strip_query_terms
- coredump_dir
- redirector_bypass
- digest_generation
- ignore_unknown_nameservers
- digest_bits_per_entry
- digest_rebuild_period
- digest_rewrite_period
- digest_swapout_chunk_size
- digest_rebuild_chunk_percentage
- chroot
- server_persistent_connections
- client_persistent_connections
- pipeline_prefetch
- extension_methods
- high_response_time_warning
- high_page_fault_warning
- high_memory_warning
- store_dir_select_algorithm
- ie_refresh
- Miscellaneous
- dns_testnames
- logfile_rotate
- append_domain
- tcp_recv_bufsize
- err_html_text
- deny_info
- memory_pools
- memory_pools_limit
- forwarded_for
- log_icp_queries
- icp_hit_stale
- minimum_direct_hops
- minimum_direct_rtt
- cachemgr_passwd
- store_avg_object_size
- store_objects_per_bucket
- client_db
- netdb_low
- netdb_ping_period
- query_icmp
- test_reachability
- buffered_logs
- reload_into_ims
- always_direct
- never_direct
- anonymize_headers
- fake_user_agent
- icon_directory
- error_directory
- minimum_retry_timeout
- maximum_single_addr_tries
- snmp_port
- snmp_access
- snmp_incoming_address
- as_whois_server
- wccp_router
- wccp_version
- wccp_incoming_address
- wccp_outgoing_address
- Configuration Manual 2.6
- Network Parameters
- Administrative Parameters
- Neighbour Selectios Algorithm
- Cache Directories
- Cache Registration Services
- Tuning the cache
- Timeout
- Accelerator Service
- Cache Size
- Support Programs
- ftp_user
- ftp_list_width
- ftp_passive
- ftp_sanitycheck
- ftp_telnet_protocol
- check_hostnames
- allow_underscore
- cache_dns_program
- dns_children
- dns_retransmit_interval
- dns_timeout
- dns_defnames
- dns_nameservers
- hosts_file
- diskd_program
- unlinkd_program
- pinger_program
- url_rewrite_program
- url_rewrite_children
- url_rewrite_concurrency
- url_rewrite_host_header
- url_rewrite_access
- location_rewritre_program
- location_rewrite_children
- location_rewrite_concurrency
- location_rewrite_access
- auth_param
- authenticate_cache_garbage_interval
- authenticate_ttl
- authenticate_ip_ttl
- external_acl_type
- Access Controls
- acl
- follow_x_forwarded_for
- acl_uses_indirect_client
- delay_pools_uses_indirect_client
- log_uses_indirect_client
- http_access
- http_access2
- http_reply_access
- icp_access
- htcp_access
- htcp_clr_access
- miss_access
- cache_peer_access
- ident_lookup_access
- tcp_outgoing_tos
- tcp_outgoing_address
- reply_header_max_size
- reply_body_max_size
- log_access
- Delaypool Parameters
- delay_pools
- delay_class
- delay_access
- delay_parameters
- delay_initial_bucket_level
- incoming_icp_average
- max_open_disk_fds
- offline_mode
- uri_whitespace
- broken_posts
- mcast_miss_addr
- mcast_misss_ttl
- mcast_miss_port
- mcast_miss_encode_key
- nonhierarchical_direct
- prefer_direct
- strip_query_terms
- coredump_dir
- redirector_bypass
- ignore_unknown_nameservers
- digest_generation
- digest_bits_per_entry
- digest_rebuild_period
- digest_rewrite_period
- digest_swapout_chunk_size
- digest_rebuild_chunk_percentage
- chroot
- client_persistent_connections
- persistent_connection_after_error
- detect_broken_pconn
- balance_on_multiple_ip
- pipeline_prefetch
- extension_methods
- request_entites
- high_response_time_warning
- high_page_fault_warning
- high_memory_warning
- store_dir_select_algorithm
- forward_log
- ie_refresh
- vary_ignore_expire
- sleep_after_fork
- minimum_expiry_time
- relaxed_header_parser
- Miscellaneous
- dns_testnames
- logfile_rotate
- append_domain
- tcp_recv_bufsize
- error_map
- err_html_text
- deny_info
- memory_pools
- memory_pools_limit
- via
- forwarded_for
- log_icp_queries
- icp_hit_stale
- minimum_direct_hops
- minimum_direct_rtt
- cachemgr_passwd
- store_avg_object_size
- store_objects_per_bucket
- client_db
- netdb_low, netdb_high
- netdb_ping_period
- query_icmp
- test_reachability
- buffered_logs
- reload_into_ims
- always_direct
- never_direct
- header_access
- header_replace
- icon_directory
- global_internal_static
- short_icon_urls
- error_directory
- maximum_single_addr_tries
- retry_on_error
- snmp_port
- snmp_access
- snmp_incoming_address,
- as_whois_server
- wccp_router
- wccp2_router
- wccp_version
- wccp2_rebuild_wait
- wccp2_forwarding_method
- wccp2_return_method
- wccp2_assignment_method
- wccp2_service
- wccp2_service_info
- wccp2_weight
- wccp_address,wccp2_adderss
- Configuration Manual 2.7
- Miscellaneous
- dns_testnames
- logfile_rotate
- append_domain
- tcp_recv_bufsize
- error_map
- err_html_text
- deny_info
- memory_pools
- memory_pools_limit
- via
- forwarded_for
- log_icp_queries
- icp_hit_stale
- minimum_direct_hops
- minimum_direct_rtt
- cachemgr_passwd
- store_avg_object_size
- store_objects_per_bucket
- client_db
- netdb_low, netdb_high
- netdb_ping_period
- query_icmp
- test_reachability
- buffered_logs
- reload_into_ims
- always_direct
- never_direct
- header_access
- header_replace
- icon_directory
- global_internal_static
- short_icon_urls
- error_directory
- maximum_single_addr_tries
- retry_on_error
- snmp_port
- snmp_access
- snmp_incoming_address
- as_whois_server
- wccp_router
- wccp2_router
- wccp_version
- wccp2_rebuild_wait
- wccp2_forwarding_method
- wccp2_return_method
- wccp2_assignment_method
- wccp2_service
- wccp2_service_info
- wccp2_weight
- wccp_address,wccp2_adderss
- logfile_daemon
- netdb_filename
- update_headers
- zph_mode
- zph_local
- zph_sibling
- zph_parent
- zph_option
- Delaypool Parameters
- delay_pools
- delay_class
- delay_access
- delay_parameters
- delay_initial_bucket_level
- incoming_icp_average
- max_open_disk_fds
- offline_mode
- uri_whitespace
- broken_posts
- mcast_miss_addr
- mcast_miss_ttl
- mcast_miss_port
- mcast_miss_encode_key
- nonhierarchical_direct
- prefer_direct
- strip_query_terms
- coredump_dir
- redirector_bypass
- ignore_unknown_nameservers
- digest_generation
- digest_bits_per_entry
- digest_rebuild_period
- digest_rewrite_period
- digest_swapout_chunk_size
- digest_rebuild_chunk_percentage
- chroot
- client_persistent_connections
- persistent_connection_after_error
- detect_broken_pconn
- balance_on_multiple_ip
- pipeline_prefetch
- extension_methods
- request_entities
- high_response_time_warning
- high_page_fault_warning
- high_memory_warning
- store_dir_select_algorithm
- forward_log
- ie_refresh
- vary_ignore_expire
- sleep_after_fork
- minimum_expiry_time
- relaxed_header_parser
- ignore_ims_on_miss
- zero_buffers
- server_http11
- ignore_expect_100
- Accelerator Service
- Cache Size
- Access Controls
- acl
- follow_x_forwarded_for
- acl_uses_indirect_client
- delay_pools_uses_indirect_client
- log_uses_indirect_client
- http_access
- http_access2
- http_reply_access
- icp_access
- htcp_access
- htcp_clr_access
- miss_access
- cache_peer_access
- ident_lookup_access
- tcp_outgoing_tos
- tcp_outgoing_address
- reply_header_max_size
- reply_body_max_size
- log_access
- Timeout
- Tuning the Cache
- Cache Registration Service
- Network Parameters
- Neighbour Selection Algorithm
- Cache Directories
- Administrative Parameters
- Support Programs
- ftp_user
- ftp_list_width
- ftp_passive
- ftp_sanitycheck
- ftp_telnet_protocol
- check_hostnames
- allow_underscore
- cache_dns_program
- dns_children
- dns_retransmit_interval
- dns_timeout
- dns_defnames
- dns_nameservers
- hosts_file
- diskd_program
- unlinkd_program
- pinger_program
- url_rewrite_program
- url_rewrite_children
- url_rewrite_concurrency
- url_rewrite_host_header
- url_rewrite_access
- location_rewritre_program
- location_rewrite_children
- location_rewrite_concurrency
- location_rewrite_access
- auth_param
- authenticate_cache_garbage_interval
- authenticate_ttl
- authenticate_ip_ttl
- external_acl_type
- authenticate_ip_shortcircuit_ttl
- authenticate_ip_shortcircuit_access
- storeurl_rewrite_program
- storeurl_rewrite_children
- storeurl_rewrite_concurrency
- storeurl_access
- Miscellaneous
- Configuration Manual 3.0
- Tuning the cache
- Time Out
- Support Programs
- ftp_user
- ftp_list_width
- ftp_passive
- ftp_sanitycheck
- check_hostnames
- cache_dns_program
- dns_children
- dns_retransmit_interval
- dns_timeout
- dns_defnames
- dns_nameservers
- hosts_file
- diskd_program
- pinger_program
- redirect_program
- redirect_children
- redirect_concurrency
- redirect_rewrites_host_header
- redirector_access
- auth_param
- authenticate_cache_garbage_interval
- authenticate_ttl
- authenticate_ip_ttl
- external_acl_type
- Network Parameters
- Neighbour Selection Algorithm
- Miscellaneous
- dns_testnames
- logfile_rotate
- append_domain
- tcp_recv_bufsize
- err_html_text
- email_err_data
- deny_info
- memory_pools
- memory_pools_limit
- Via
- forwarded_for
- log_icp_queries
- icp_hit_stale
- minimum_direct_hops
- minimum_direct_rtt
- cachemgr_passwd
- store_avg_object_size
- store_objects_per_bucket
- client_db
- netdb_low, netdb_high
- netdb_ping_period
- query_icmp
- test_reachability
- buffered_logs
- reload_into_ims
- always_direct
- never_direct
- header_access
- header_replace
- icon_directory
- error_directory
- maximum_single_addr_tries
- snmp_port
- snmp_access
- snmp_incoming_address
- as_whois_server
- wccp_router
- wccp_version
- wccp_incoming_address
- Delay Pool Parameters
- delay_pools
- delay_class
- delay_access
- delay_parameters
- delay_initial_bucket_level
- incoming_icp_average
- max_open_disk_fds
- offline_mode
- uri_whitespace
- broken_posts
- mcast_miss_addr
- mcast_miss_ttl
- mcast_miss_port
- mcast_miss_encode_key
- nonhierarchical_direct
- prefer_direct
- strip_query_terms
- coredump_dir
- redirector_bypass
- ignore_unknown_nameservers
- digest_generation
- digest_bits_per_entry
- digest_rebuild_period
- digest_rewrite_period
- digest_swapout_chunk_size
- digest_rebuild_chunk_percentage
- chroot
- client_persistent_connections
- pipeline_prefetch
- extension_methods
- request_entities
- high_response_time_warning
- high_page_fault_warning
- high_memory_warning
- store_dir_select_algorithm
- ie_refresh
- vary_ignore_expire
- sleep_after_fork
- Cache Size
- Cache Registration Services
- Cache Directories
- Administrative Parameters
- Access Controls
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