into buckets (Bucket) according to the UUID (user ID), each bucket corresponds to a sort policy, and the flow in the bucket is sorted using the corresponding policy. The use of UUID for traffic segmentation is to ensure the consistency of the user experience.The following is a simple example of a/b test configuration.
{"
search": {"
numberofbuckets": "
defaultstrategy": "Base",
"segments": [
{
] Beginbucket ": 0,
" endbucke
) (struct i2c_client *client, unsigned int cmd, void *arg); Use commands to make the device perform special functions. Similar to the IOCTL () function struct Devcie_driver driver; Device driven structural body const struct I2C_DEVICE_ID *id_table; Device ID table int (*detect) (struct i2c_client *, int kind, struct i2c_board_info *); callback function for automatic detection device const struct I2C_CLIENT_ADDRESS_DATA *address_Data The address range where the device is located struct List_head
implementation of the adapter in the I²C hardware system. Contains the algorithm structure of the adapter data structure I2c_adapter and adapters primarily i2c_algorithmI2c_adapter1 structI2c_adapter2 {3 structModule *owner;/*Owning Module*/4UnsignedintId/*the type of algorithm, defined in I2c-id.h, starts with I2c_algo_*/5Unsignedint class;6 structI2c_algorithm *algo;/*Bus communication method struct body pointer*/7 void*algo_data;/*al
$jdj5jdewjdhsthv6sgviquprrhzngqsuetlk8iem0okh6hpycoo22
Now that the hash is created, we can see that the new hash is worth the information by Password_get_info (). Password_get_info () requires an argument--a hash value--and returns an associative array that contains the algorithm (the integer representation of the hash algorithm used), the algorithm name (the readable name of the hash algorithm used), and the option (we use to create the hash-worthy option).
The code is a
) and consumption values (cost ) , you can interpret the latter as a kind of performance consumption value, the greater the cost, The more complex the encryption algorithm, the greater the memory consumed. Of course, if you need to specify the corresponding salt value and consumption value, you can write this:
' cost ' => A//The default cost is
;
$hash = Password_hash ($password, Password_default, $options);
After the password is encrypted, we need to verify the password to de
By default, Kubernetes has a certificate validity period of 1 years when initializing a cluster. Manually generating certificates can avoid this problem.
Pull git code
git clone https://github.com/fandaye/k8s-tls.git CD k8s-tls/2. Edit the configuration file ' Apiserver.json ' file in the Hosts section, add the corresponding Kubernetes master node hostname and IP address to ', ' number interval. Such as:{ "CN": "Kube-apiserver", "hosts":[ "172.16.50.131", "172.16.50.132", "172.1
updating the location of the feature point, having a new position and then calculating the DELTAP, then updating the parameter p, repeating the above process until the parameter P converges. The whole process is a bit like the mean-shift algorithm, so there are mean-shift in the algorithm name. The advantage of this algorithm is the integration of a variety of deformation parameters, and so that the parameters can be iterative updates, update speed is very fast.
This article can only be describ
the idea of virtual node. Using a generic hash function, the map location of the server is distributed very unevenly. Therefore, the idea of the virtual node is used to allocate 100~200 points on the continuum for each physical node (server). This can inhibit the uneven distribution, minimize the server increase or decrease when the cache redistribution.
The result of testing with the Memcached client function library using the consistent hashing algorithm, described later in this article, is t
determine whether the user entered the correct password
Using password_verify directly, we can verify the strings we have previously encrypted (existing in the database).
If sometimes we need to change our encryption methods, such as one day we suddenly want to change the salt value or increase the consumption value, we will use the Password_needs_rehash () function.
Only in this way, PHP's password hashing API will know that we reproduce the replacement of the encr
called Libketama, developed by Last.fm. Libketama-a consistent hashing algo for memcache clients–rjブログ-Users at Last.fm
As for the Perl client, the Cache::memcached::fast and cache::memcached::libmemcached supported consistent hashing, as described in the serial 1th time. Cache::memcached::fast-search.cpan.org cache::memcached::libmemcached-search.cpan.org
Both interfaces are almost identical to cache::memcached, and if you are using cache::memcached
Web page optimization is a most basic thing, about the Web optimization includes a wide range of content, here only to talk about page optimization, not to talk about other internal links in other Web site optimization, in order to explain clearly, I use 4 charts (click to see the big picture) to talk about how to optimize the Web page?
1, the effectiveness of Web page optimization evaluation
The value of Web page optimization is that you do the page theme and the main keyword
Tags: file name rule his CTI Algo set Sch research and development Mycat A brief introduction: Today let's talk about the preliminary understanding of sharding rules Second Frontier: Mycat's Shard rules are very rich and can also be extended according to Java Three documents: Rule.xml Four specific Shard rules: Five what we need to know: 1 I consulted a lot of senior mycat on the line, Mycat's own shard rules have been fully satisfied with various bu
. Headerreqadd 10. LogLOG: Define a global syslog server, up to two can be defined, log 127.0.0.1 local2log-format 11. Compressioncompression algo 12, Static and dynamic separationfrontend main *:80 acl invalid_src src 192.168.1.104 block if invalid_src #如果源地址是192.168.1.104 invalid_src=True ;如果invalid_src是真就blockfrontend main *:5000#动静分离 acl url_static path_beg -i /static /images /javascript /stylesheets acl url_static
Tags: check http operation Open File pen basic run Algo generatorTurn from Summer seniorsWe're going to learn diff before we shoot.diff my.out right.out;This allows you to compare two files.Build a check.sh, write the above sentence in the line.Bash./check.sh1c1The above 1c1 indicates that the 1th line is wrong.With the above method, if the addition is:#!bin/bashwhile true; do./date./my./rightif diff my.out right.out; thenecho ACelseecho WAexit 0fidon
Ntpd Vulnerability (CVE-2014-9297)Ntpd Vulnerability (CVE-2014-9297)
Release date:Updated on:Affected Systems:
NTP NTP 4.x
Description:
CVE (CAN) ID: CVE-2014-9297Network Time Protocol (NTP) is a Protocol used to synchronize computer Time. It can synchronize computers with their servers or clock sources (such as quartzels and GPS.Ntpd does not properly check for exceptions and does not correctly verify the length value in the extended field pointer, which may cause information leakage.Stephen R
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