quora digest

Label:Before Windows mysql5.6.20 using mysqldumpslow.pl to analyze slow logs, today saw a tool pt-query-digest, originally intended to be installed on Windows, resulting in the execution of C: \ on Windows Program Files\mysql\mysql Server 5.6\bin>pt-query-digest.pl F:\mysql\im-slow.log > F:\mysql\slow_ Report.log, waiting for half an hour will not come out results. It must be a little support for Windows, so just use Linux. 1. First install Perl, logi

First, briefMAC (message authentication code, messaging authentication Code algorithm) is a key hash function algorithm that is compatible with the features of the MD and SHA algorithms, and adds a key on this basis. So Mac algorithms are often called HMAC algorithms. The details of the HMAC algorithm can be found in RFC 2104 (Http://www.ietf.org/rfc/rfc2104.txt), which contains the C language implementation of the HMACMD5 algorithm.What needs to be explained here is that the

PrefacePeople who have known angular know that a big feature of angular is two-way data binding. The so-called bidirectional data binding, that is, when any data in the view changes, its corresponding scope model is automatically updated, and when the scope model changes, the data in view is updated to the most recent value. So how does it work, $watch how it works, what $apply and $digest are used to do, and let's explore.browser events and angular e

I learned about MD5 encryption some time ago.Algorithm, You can write it yourselfProgramI have developed a tool for verifying the md5encryption by downloading files on the Internet. Here I will contribute the source code, and I will introduce some of this tool.CodeSo I sorted it out and used it as a document for my future study. 1. MD5 (Message Digest) Message Digest algorithm (1) the MD5 algorithm is a

Solving a Spark error:invalid signature file Digest for Manifest main attributesWhen using the Spark-submit to run a jar, the encounter this error:Invalid signature file digest for Manifest main attributesThe error occurs when one of the included libraries in the jar's Meta-inf directory has a bad signature.Solve the error with this command:zip -d Invalid signature File

Commonly used message digest algorithm has MD5 and SHA, these algorithms in the Python and go library have, need time to call under OK, here summarizes the implementation of Python and go. Example of a Python message digest The code is as follows:Copy the Code code as follows: #! /usr/bin/python ''' File:testHash.py Author:mike E-mail:mike_zhang@live.com ''' Import Hashlib src = raw_input ("Input string:")

determined in the HMAC. This process can be expressed as follows:Hkdf-extract (salt, IKM) gets PRK, and the PRK formula is as follows:PRK = Hmac-hash (salt, IKM), which has 2 inputs and one output,Salt, the input, salt-operated salts, if not provided, are all initialized to a string of 0, and the length is the hash value length of the hashed function used.IKM, input, amount Udemiyao material.PRK, output, pseudo-randomized key, length is the hashed value length of the hash function used.It is im

GitHub to explain the practical application of the project. This paper is written by Ppmoney Big Data algorithm team, Ppmoney is the leading internet finance company in China, with a total turnover of over 70 billion yuan in Ppmoney. In addition, if you are interested in the use of TensorFlow techniques and methods, please read the "TensorFlow Combat" by Huang Wenjian, the head of the team. 2 Algorithm principle The following is a neural Attention Model for abstractive sentence summarization Th

System performance tuning in particular MySQL database tuning a primary basis is the slow query log. Originally there is a powerful tool on Ubantu or CentOS is Percona Toolkit, then how to use Pt-query-digest on Mac?Download Percona ToolkitAccess Http://www.percona.com/downloads/percona-toolkit, use source code installation, download the latest stable version of 2.2.7.650) this.width=650; "src=" http://img.blog.csdn.net/20160608212319520 "alt=" here w

Label:MySQL must master the tools Pt-query-digest Ancient Cloud: 工欲善其事, its prerequisite. As a good MySQL DBA also needs to have a few useful MySQL management tools, so I have been sorting and looking for some easy to manage MySQL tool. Over the next period of time, you will spend a large part of your energy searching for these tools. Performance management has always been the first, and many of the DBA's work management are not able to see or measure

The messagedigestforfile class demonstrates the generation of an md5w digest for a file. the MD5 Digest is displayed in hex using the hex class from the apachesw commonssw codec library. the call to messagedigest. getinstance ("MD5") specifies to use the MD5Algorithm. Other common algorithms are md2 and Sha. The getdigest () method of messagedigestforfile has three parameters. the first is the inputstream o

First, simple installationwget percona.com/get/pt-query-digestchmoe u+x pt-query-digestSecond, simple useMoreReference article: Http://blog.itpub.net/29773961/viewspace-2024992/pt-query-digest is a set of tools to help DBAs manage MySQL Percona-toolkit , developed by Percona company. For log analysis, this is used to analyze slow log, in addition to the analysis of binary log, and general log.First, installationGo to the official website to select the

Basic identity authentication, you can also use PHP Web pages to handle HTTP request header fields to match Digest authentication information. For example, the following code uses the header () function to require the client to use Digest authentication, which adds a www-authenticate field to the HTTP message header: Header (' Www-authenticate:digest realm= "Myrealm", nonce= "47alf7cf25ce7", algorithm=md5

Network computing environment in a lot of time need to file a message digest calculation, to prevent file tampering, verify whether the file has been modified, the JDK itself provides a message digest algorithm, very convenient to use, mainly used in Security digest calculation class Java.security.MessageDigest, as follows: Package com.test.b; Import Java.io.Buf

Tags: mysql optimization slow log analysis (anemometer+pt-query-digest)IntroducedUse Pt-query-digest to collect slow query logs. Store the data in two tables: Global_query_review and Global_query_review_history. The data collected by Pt-query-digest is then presented in Web Form using Anemometer to facilitate query analysis.1. Preparation conditions:A.LNMP Platfo

Angular is a mature and powerful JavaScript framework. It is also a relatively large framework. Before mastering it, you need to understand many new concepts it has proposed. Many Web developers flock to Angular, and many face the same obstacles. How did Digest do it? Define a directive direve VE) What are the different methods? What is the difference between Service and provider? Angular's documentation is quite good, and third-party resources are be

Compile a php application to implement Digest Authentication. Similar to basic identity authentication, you can use PHP web pages to process HTTP request header fields to match Digest Authentication information. For example, the following code uses the header () function to require the client to use basic identity authentication. you can also use the PHP web page to process HTTP request header fields to mat

In the network computing environment, message digest computing is often performed on files to prevent file tampering and check whether the file has been modified. JDK provides the message digest algorithm, which is quite convenient to use, mainly used in Security summary computing Java. Security. messagedigest, as follows: Package COM. test. b; import Java. io. bufferedinputstream; import Java. io. fileinp

15.1. Principle Steps Registration: When registering, encrypt the user password into the database Login: When logged in, the user password is encrypted using the same algorithm as above, and then compared with the information in the database, if the same, the login 15.2, implementation (here using the SHA256 algorithm, the other digest algorithm md5/sha1/mac similar)Note: The program here is in my previous write a maven+spring+spring

HTTP digest client implementation Http://lwccb.blog.163.com/blog/static/116970122006727338520/ Networks 15:38:52 read 34 comments 0 font size: LargeMediumSmall subscription From socket import *From MD5 import *From Random import * Conn = socket (af_inet, sock_stream)Conn. Connect ("test.bj.xxx.com", 80 )) Conn. send ("Get/demo.htm HTTP/1.1/R/naccept: text/html/R/nconnection: keep-alive/R/nuser-AGENT: Mozilla/R/nhost: test-mediasvr.bj.intel.com/r/n/r