TTL 索引expireAfterSeconds值必须介于0和2147483647(包含两者)之间。 例如,以下操作在log_events集合的createdAt字段上创建索引,并指定10的expireAfterSeconds值,以将过期时间设置为createdAt指定的时间后十秒。 db.log_events.createIndex( {"createdAt":1}, {expireAfterSeconds:10} ) ...
Do not setexpireAfterSecondstoNaNin your TTL index configuration. Prior to MongoDB 5.0, when a TTL index hasexpireAfterSecondsset toNaN, MongoDB logs an error and does not remove any records. From MongoDB 5.0.0 - 5.0.13 (and 6.0.0 - 6.0.1),NaNis treated as0. If a TTL index is ...
Standard network commands, orutilities, liketracerouteandping, use TTL to reach the host or trace a route to that host. Ping is used prior to using traceroute to determine whether a host is on the network. Traceroute records the route at each hop through the internet between a computer an...
The initial/default value of the time-to-live setting is typically1. An implementation allows this socket option to be set after the socket is bound. Whether the socket option can be queried or changed prior to binding the socket is system dependent. ...
Here's my take on the instructions set that will control the 4-bit TTL CPU. Since the instruction bus is only 4 bits wide there can only be a maximum of 16 instructions. Each 4-bit operator is paired with a 4-bit operand so each instruction will make up 8 bits in total. The opera...
适用行业 CS152DP PS3J100 LDB102/3 Lumen Prior III,线性位移 稳定度 100 用途范围 PureFocus850 FB203, FB204, FB205, FB206 PL100/200 月产量 10000 制造商 Prior Scientific 可售卖地 北京;天津;河北;山西;内蒙古;辽宁;吉林;黑龙江;上海;江苏;浙江;安徽;福建;江西;山东;河南;湖北;湖南;广东...
-You can select the power, from the left to right, 1/1 (full) – ½ - ¼ - 1/8 – 1/16 – 1/32.-Set the camera shooting mode to either [ AV ] (Canon),[ A ] (Nikon), or [ M ]. -Select your desired F-stop and/or shutter speed. Point your camera at the subject...
An attribute that defines the time-to-live (TTL) value assigned to DS records when signing the DNS zone.
If the cache is desired to be set to never expire, a value of-1can be used to represent infinite/unlimited. This is the default behaviour in Java. From the Java documentation regarding the value: "The value is specified as integer to indicate the number of seconds to cache the succes...
It’s possible to set shorter TTLs. However, it can cause heavier loads on an authoritative nameserver, but can be useful when changing the address of critical services like web servers orMX records(mail server pointers), and therefore are often lowered by the DNS administrator prior to a se...