ttl

ArangoDB Cursor Timeout

由 半城伤御伤魂 提交于 2019-12-11 07:40:59
问题 Using ArangoDB 2.3.1. It seems my cursors are expiring within a couple minutes. I would like them to last for an hour. I've set up my AQL query object with the TTL parameter as follows: { "query": 'removed actual query', "count": true, "batchSize": 5, "ttl": 3600000 } My understanding is that the TTL parameter should tell the server to keep the server for 3600000 milliseconds or 1 hour. But it expires within about 60 seconds. In fact, I've tried changing the TTL to several different numbers

How obtain TTL(Time To Live) in DNS?

由 ℡╲_俬逩灬. 提交于 2019-12-10 17:16:31
问题 I want to monitor the DNS address. I need to get the TTL (time to live) which tells me when the DNS record will expire. How do I obtain the TTL in C#?? 回答1: There is .Net sample code at C# .NET DNS query component that appears to provide the API you require. 来源： https://stackoverflow.com/questions/14545973/how-obtain-ttltime-to-live-in-dns

Max value for TTL in cassandra

由 て烟熏妆下的殇ゞ 提交于 2019-12-10 14:54:40
问题 What is the maximum value we can assign to TTL ? In the java driver for cassandra TTL is set as a int. Does that mean it is limited to Integer.MAX (2,147,483,647 secs) ? 回答1: The maximum TTL is actually 20 years. From org.apache.cassandra.db.ExpiringCell : public static final int MAX_TTL = 20 * 365 * 24 * 60 * 60; // 20 years in seconds I think this is verified along both the CQL and Thrift query paths. 回答2: I don't know why do you need this but default TTL is null in Cassandra which means it

Is TTL for Cassandra counter column family supported?

由 北慕城南 提交于 2019-12-08 17:14:17
问题 Does Cassandra support TTL for the Counter column family? Specifically we use Hector as a client to Cassandra and I didn't find any API receiving TTL as a parameter. At least HFactory.createCounterColumn doesn't have TTL argument. 回答1: No. TTL expiration does not exist for counter columns. See CASSANDRA-2103 for background on why this feature doesn't make sense for Cassandra counter columns. 来源： https://stackoverflow.com/questions/19752308/is-ttl-for-cassandra-counter-column-family-supported

Cassandra timing out when queried for key that have over 10,000 rows even after giving timeout of 10sec

由 和自甴很熟 提交于 2019-12-08 09:28:50
问题 Im using a DataStax Community v 2.1.2-1 (AMI v 2.5) with preinstalled default settings. And i have a table : CREATE TABLE notificationstore.note ( user_id text, real_time timestamp, insert_time timeuuid, read boolean, PRIMARY KEY (user_id, real_time, insert_time)) WITH CLUSTERING ORDER BY (real_time DESC, insert_time ASC) AND bloom_filter_fp_chance = 0.01 AND caching = '{"keys":"ALL", "rows_per_partition":"NONE"} AND **default_time_to_live** = 20160 The other configurations are: I have 2

How to run Teraterm and TTL file using Batch file?

由 荒凉一梦 提交于 2019-12-08 08:49:29
From Tera Term. To start MACRO (TTL), select the [Control] Macro command and then the macro file in the Open Macro dialog box. The question is how to write command inside batch file, to call macro file and run automatically by just opening batch file. This is the command from previous post. "C:\Program Files (x86)\teraterm\ttermpro.exe" /I /C=1 /BAUD=115200 /M=C:\Users\Public\test_ttermpro.ttl From my uderstanding, /M should be command to open macro file. But now, Teraterm is open but don't execute TTL file. Any idea on how to solve this issue? Here the solution for my question. I create a

How to run Teraterm and TTL file using Batch file?

由 自古美人都是妖i 提交于 2019-12-08 05:15:42
问题 From Tera Term. To start MACRO (TTL), select the [Control] Macro command and then the macro file in the Open Macro dialog box. The question is how to write command inside batch file, to call macro file and run automatically by just opening batch file. This is the command from previous post. "C:\Program Files (x86)\teraterm\ttermpro.exe" /I /C=1 /BAUD=115200 /M=C:\Users\Public\test_ttermpro.ttl From my uderstanding, /M should be command to open macro file. But now, Teraterm is open but don't

Window通过cmd命令测试服务器带宽性能的方法（IP测试）

由 [亡魂溺海] 提交于 2019-12-08 04:38:08
一、我分别使用三台香港云服务器来测试： 1号 39.109.122.213 2号 144.48.8.152 3号 103.212.32.208 二、在cmd里输入第一条命令： ping ip地址 -t ping返回的参数说明： <字节> ：表示发送到服务器的数据包大小 <时间> ：响应的时间 <TTL> ：生存时间(Time To Live)，数据包被路由器丢弃之前允许通过的最大网段数量。 1、字节是固定的，ping都是发送32字节的数据包。 2、响应时间当然是越小越好，数值越小，网络延迟越低，带宽就越好！ 3、TTL用来计算数据包在路由器的消耗时间，因为现在绝大多数路由器的消耗时间都小于1s，而时间小于1s就当1s计算，所以数据包每经过一个路由器节点TTL都减一。 4、不同的操作系统，TTL的初始值都不同： Linux系统 TTL值为 64 或 255 WindowsNT/2000/XP系统 TTL值为 128 Windows98系统 TTL值为 32 UNIX主机 TTL值为 255 “TTL”的值越大越好，因为“TTL”的值越大，说明发送数据包经过路由器越少，而经过路由器越少，说明越快到达目的地，速度当然也就越快。 三、一起来看一下刚才那3台云服务器ping的结果： 1号 39.109.122.213 2号 144.48.8.152 3号 103.212.32.208

VMware+Centos7 配置静态Ip

由 一笑奈何 提交于 2019-12-07 02:39:20
配置静态IP连接外网，首先设为桥接模式 虚拟机》设置 编辑》虚拟机编辑器 切换到root用户，输入密码 su root 修改配置文件 [root@localhost /]# vi etc/sysconfig/network-scripts/ifcfg-ens33 修改:ins键或i键 退出不保存:esc键+：+q! 保存修改退出:esc+:+wq 改完后如下 TYPE="Ethernet" PROXY_METHOD="none" BROWSER_ONLY="no" BOOTPROTO="static" DEFROUTE="yes" IPV4_FAILURE_FATAL="no" IPV6INIT="yes" IPV6_AUTOCONF="yes" IPV6_DEFROUTE="yes" IPV6_FAILURE_FATAL="no" IPV6_ADDR_GEN_MODE="stable-privacy" NAME="ens33" UUID="67d82594-f3e0-41c5-86f5-13d1221a7e51" DEVICE="ens33" ONBOOT="yes" IPADDR="192.168.13.206" NETMASK="255.255.0.0" DNS1=114.114.114.114 GATEWAY=192.168.13.1 PEERDNS="yes"

深入浅出网工第二个协议---Internet控制报文协议ICMP

由 蹲街弑〆低调 提交于 2019-12-06 18:34:40
ICMP简介 ICMP（Internet Control Message Protocol）是网络层的一个重要协议 ICMP的作用：用来在网络设备间传递各种差错和控制信息，它对于收集各种网络信息、诊断和排除各种网络故障具有至关重要的作用 ICMP协议中用到的报文类型：Echo-Request和Echo-Reply 两种报文 使用的都是单播报文 ICMP错误报告 ICMP定义了各种错误消息，用于诊断网络连接性问题；根据这些错误消息，源设备可以判断出数据传输失败的原因。比如，如果网络中发生了环路，导致报文在网络中循环，最终TTL超时，这种情况下网络设备会发送TTL超时消息给发送端设备。又比如如果目的不可达，则中间的网络设备会发送目的不可达消息给发送端设备。 小结： 注意：ICMP定义了多种消息类型，用于不同的场景 有些消息不需要Code字段来描述具体类型参数，仅用Type字段表示消息类型。 有些ICMP消息使用Type字段定义消息大类，用Code字段表示消息的具体类型。 ICMP重定向 主机A希望发送报文到服务器A，于是根据配置的默认网关地址向网关RTB发送报文。网关RTB收到报文后，检查报文信息，发现报文应该转发到与源主机在同一网段的另一个网关设备RTA，因为此转发路径是更优的路径。所以RTB会向主机发送一个Redirect消息，通知主机直接向另一个网关RTA发送该报文
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