girl for all time

Preface: This article is translated from log everything all the time, in which a small amount of content is omitted. If necessary, read the original article. This article from the blog garden Jing Han http://gpcuster.cnblogs.com Translation: This joelonsoftware Q A activity mentioned an old question: What is log and how to log. The common trace/error/warning/INFO method is not very useful in large

target logs.There are two parameters in the MY.CNF to control the Bin-log.Expire_logs_daysThe number of days that the binary log was automatically deleted. The default value is 0, which means "no automatic deletion".Sql_log_binYou can define whether the statements of your session at this time are recorded in the inverted Binlog. Turning it off can improve performance by 1%. all of MySQL's operational infor

Select Sort, quick sort, hill sort, heap sort is not a stable sort algorithm, bubble sort, insert sort, merge sort and cardinality ordering are stable sorting algorithms. Bubble method:This is the most primitive, and also known as the slowest algorithm. The origin of his name was because its work seemed to be bubbling: The complexity was O (n*n). When the data is in positive order, there will be no exchange. The degree of complexity is O (0). Direct Insertion Sort: O (n*n) Select sort: O (n*

Where did all the time go? Suddenly think of this sentence, a blink of an eye from the babbling, we have grown into a person. Remember last year's popular song, "Not yet feel young and old", do you also have a resonance? Ordinary as I, perhaps most of us, always too laissez-faire, self-control is not enough, there is no sense of management time. In life, to play

tab in front of the formula. At this time, the formula is centered and aligned with the center table, move the cursor between the formula and the left brace, and press the tab key to insert a tab. Then the number is displayed at the end of the row.It is very easy and convenient to use the tabulation method to process the formula layout. You do not need to press a lot of spaces to move the formula to the middle and push the number to the end of the ro

In the process of international software project development, sometimes encounter some more special requirements. For example, you do a shopping site (assuming the server is placed in Shanghai, China), when the world's customers on your website orders to buy things, often want to see the location of the customer place time, for example, I am a New Yorker in the United States, I on your website after the order, you show me a Shanghai order

(1) Use the method to obtain all the dates in two any time period, the code is as follows:#1. Convert a string to a datetime typedefStrtodatetime (datestr,format):returndatetime.datetime.strptime (Datestr,format)#2. Time converted to string, formatted as 2008-08-02defdatetostr (date):returnSTR (date) [0:10]#3, two days apart, for example: 2008-10-03 and 2008-10-0

Condition: According to the data of a time period of the database, get all the data information during the filter period:By analyzing the data in this filter time period can be broadly divided into the following 3 cases: The start time of a field in a database is within the filter start and end

Tags: source inux tool database server share Picture div class System MySQL serverMysql One-time backup export/import restore all databasesHave you ever encountered this situation with wood? Does the computer or server need to reload the system? What if you have more than one database on your computer with more than n websites? Copy the database folder, reload the system and then cuff it back? If you use th

How can I replace all the javascript string replacement functions at a time? JS string replacement function: Replace ("string 1", "string 2 ″) 1. we all know that the string replacement function in JS is Replace ("string 1", "string 2"), but this function can only Replace string 1 that appears for the first time, so

Introduction I got a small project-the schedule management system. When the database is queried during the initialization date, the database is queried once every date, which leads to this problem. Problem This may occur because all pool connections are in use and the maximum pool size is reached. Description: An unhandled exception occurred during the execution of the current Web request. please review the stack trace for more information about the

How can I query all tables and sort them by the published time? For example, I made a forum where posts for each topic were placed in a separate table. I posted posts for the hardware, software, and programming sections respectively. now I am in my personal center, how can I display all my posts and sort them by release time