synchronization database backup?
1. master server:# Master startLog-bin = "d:/log/mysql/mysql_log_bin"Server-id = 1# Master end2. slave server:# Slave startLog-bin = "D:/log/mysql2/log-bin.log"Relay_log = "D:/log/mysql2/relay-log-bin"# Slave id, different from the host idServer-id = 2# Host ip address, used by the slave machine to connect to the host# Master-host = localhost# Host port# Master-ports = 3300# The account you just created to copy host d
increased from three months to three and a half months. Added and optimized the core technologies of large portal websites, as well as heavy-traffic, large concurrency, and big storage, and advanced Redis technologies. In order to help students better employment and enhance their core competitiveness, among all PHP training institutions in China, it was the first and only one to add the in-depth optimization LNMP course (on a general 2G memory laptop, Nginx was optimized from 6000 to 18000 in c
native, then Redis returns a Errors Reply for the client, and the error content is a MOVE redirect, for example:
127.0.0.1:6494> Get B
(Error) MOVED 3300 10.10.10.178:6494
At this time the client according to MOVED instruction, to connect 10.10.10.178:6494 instance, initiate the same request, get the correct data. Ideally, the Smart client can find the correct node by simply MOVED the jump once.
When a slot is migrated, Redis marks the s
Output Sample input example # #:3300 1000700 12001500 2100Sample # # of output:900 300DescriptionThe title translation comes from Nocow.Usaco Training Section 1.2Ideas:Offline practicesThe segment tree covers all the intervalsThen convert to linear to find the maximum intervalCome on, on the code:#include #includestring>#include#includeusing namespacestd;classT_tree { Public: intL,r,mid; BOOLFlag,dis; voidFlag_ () {flag=true; }
: Inventory increase, the dollar strong rise, crude asphalt silver plummeted" Last week, the whole stock of commodities lower, gold and silver fell below the pre-high interval concussion, silver one-sided down 120 points, the lowest touch 3200 below, lost 3300 of the integer pass; crude asphalt Wednesday short back, Asian-European plate is still a long time concussion style, around 2000-2020 repeated finishing ready, The American dish unfolds the dow
[Programming questions] character encoding design an algorithm that gives a binary encoding of a string so that the length of the encoded string is the shortest.Input Description:One row for each set of data, for the string to encode. guarantees that the string length is less than or equal to 1000.Output Description:The shortest encoded length of a line output.Input Example:Mt-tech-teamOutput Example:33#include #include#include#include#include#include#includeusing namespacestd;intMain () {Chars[
enterprise for you to pay 5680 yuan, and you only got 3300 yuan, the actual social security rate of 42%, for this, we can only thank the country.When we buy personal insurance, such as life and accident Insurance, we actually buy a family responsibility. Because when you are in heaven, the money in the bank and you do not have a half gross money relationship, but the insurance money can be financially for you to take care of your parents and children
the door ...... Then I saw my score-93 points and 4 errors, which is quite good, similar to my estimation. I didn't feel much excited at the time, probably because it was too natural. The lady at the reception also said it was a high score, and it was nice to hear it. Then I asked about the certification in the future. The next scjd would be ¥3300, and the package (plus training) would be ¥4700. It's a good expensive experience. However, this evidenc
, 5th million downloads, 40 thousand million downloads, and 10th million downloads. The champion of the South Korean download list downloads 6600 times a day, 5th million, 3300 million, and 10th million.
Google Play platform: the champion of the download list in Japan downloads 52 thousand times a day, 5th downloads 32 thousand times, 10th downloads 17 thousand times. The champion of the South Korean download list downloads 55 thousand times a day, 5t
is used, we only need one SQL statement to solve the problem, as shown below:
SELECT std_id,Case when count (*) = 1 -- select only the students of one courseThen max (class_id)Else max (case when main_class_flg = 'y'THEN class_idELSE NULL END)End as main_classFROM StudentclassGroup by std_id;Running result
STD_ID MAIN_class----------------100 1200 3300 4400 5500 6By embedding Case functions in Case functions and using Case functions in aggregate func
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