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Real World Use of Zookeeper [closed]

...apache-zookeeper/ You can of course also use it to create resource locks, etc, in a distributed system. share | improve this answer | follow | ...
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Http长连接200万尝试及调优 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...控最大连接数。 服务端还需要调整一下系统的参数,在/etc/sysctl.conf中: net.core.somaxconn = 2048 net.core.rmem_default = 262144 net.core.wmem_default = 262144 net.core.rmem_max = 16777216 net.core.wmem_max = 16777216 net.ipv4.tcp_rmem = 4096 4096 16777216 ...
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“Keep Me Logged In” - the best approach

... hash_hmac('sha256', $cookie, SECRET_KEY); $cookie .= ':' . $mac; setcookie('rememberme', $cookie); } Then, to validate: function rememberMe() { $cookie = isset($_COOKIE['rememberme']) ? $_COOKIE['rememberme'] : ''; if ($cookie) { list ($user, $token, $mac) = explode(':', ...
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Is mongodb running?

...| grep mongo | grep -v grep # "ps" flags may differ on your OS or /etc/init.d/mongodb status # for MongoDB version < 2.6 /etc/init.d/mongod status # for MongoDB version >= 2.6 or service mongod status to see if mongod is running (you need to be root to do this, or...
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Coding in Other (Spoken) Languages

...mbols. Later I learn that "for" meant "para" and "while" meant "mientras" etc. but in the mean time I did not need to know English, but in my case what I needed was to know "C". Of course when I needed to learn more things, I had to learn English, for the documentation is written in that language....
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Prefer composition over inheritance?

...ent as a has a relationship. A car "has an" engine, a person "has a" name, etc. Think of inheritance as an is a relationship. A car "is a" vehicle, a person "is a" mammal, etc. I take no credit for this approach. I took it straight from the Second Edition of Code Complete by Steve McConnell, Section...
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How find all unused classes in Intellij Idea?

...question ) But I want to find all unused classes, not methods, variables etc. Only classes. (it is difficult to find only classes in 3000 result list). How I can do that? ...
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How do you set EditText to only accept numeric values in Android?

... I needed it in order to prevent users from typing operators, parentheses, etc. on the number pad. What a life saver, man! Welcome to Costco; I love you! – gonzobrains Jul 23 '14 at 23:38 ...
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Which method performs better: .Any() vs .Count() > 0?

...th or .Count (such as ICollection<T>, IList<T>, List<T>, etc) - then this will be the fastest option, since it doesn't need to go through the GetEnumerator()/MoveNext()/Dispose() sequence required by Any() to check for a non-empty IEnumerable<T> sequence. For just IEnumerabl...
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Is there a faster/shorter way to initialize variables in a Rust struct?

...tural" defaults that some languages use such as I believe zero, false, "", etc., would suit me. I do understand that there are wider implications than my small "problem" to solve. Ability to state eg. "iVal : i64 = 0", would solve my wider needs, but I guess that's not going to happen. The "#[derivi...