baidu faster

items that we can change, one is the quality of the thumbnail, and the other is the size of the thumbnail image. The quality of the changed thumbnail determines the size of the generated Thumbs.db file, and the size of the thumbnail determines how quickly the thumbnail is displayed when viewed as thumbnails. Appropriate modifications may be made as necessary. It is recommended that the image quality should not be modified too low, the thumbnail size to 48 on it, too small can not see clearly.

not a header file but some form of compilation module, multiple source files (compilation unit) reference the same module then the compiler only needs to parse the module generation AST reuse, the compilation speed can also improve a lot.C/C + + stupid text insertion form of the #include, the assembly compiler completely eliminates the compilation of header files, you refer to the direct supply of the type and method of God horse metadata, the compiler directly to use the good.Finally, because

Truncate is the direct lowering of the high watermark, as Oracle retrieves data by retrieving data below the high watermark so that you can quickly locate the range that you need to retrieve the blocks of data. After that, those chunks of data that were used before are released in batches, and the space is reused, which is very fast because unlike the delete operation, which actually identifies every block of data that is retrieved, the actual space is not released or can be recovered. In contr

server| Comparison | The comparison of the statements in access is simple, such as the SELECT * from table Where thetime># ' Now () #这样即可 This cannot be done in MSSQL, and is compared using the DateDiff statement and the GETDATE () function. For example, select Count (*) from table where DateDiff (S,getdate (), thetime) >0, I specifically made a 500,000-piece table of data, which would take almost 1200 milliseconds to execute. Later studied, found that in fact, do not need to use the DateDif

Challenge", an unmanned car race held in 2007, used heuristic search to plan flat, direct, and accessible routes. Heuristic search has also been applied successfully in natural language processing, which is used in the parsing of text and stack decoding in speech recognition. It is also used in the field of robotics and bioinformatics. Compared with traditional dynamic programming methods, using heuristic search can solve multiple sequence alignment (multiple Sequence alignment, MSA)

Tags: Understanding data ring Why increase access speed disk resolution list first of all, we know that MySQL is persistent storage, stored in the disk, retrieval, will involve a certain IO, in order to solve the bottleneck, so there is a cache, such as the current use of the most memcached (referred to as MC). First, the user accesses the MC, if not hit, to access MySQL, and then like memory and hard disk, the data copied to the MC part of the Redis and MC are cached, and all reside in memory r

, Building micro-blog (middle)Lesson 32, building a micro-blog (next)Lesson 33, Forum building Examples (top)Lesson 34, Forum Build example (middle)Lesson 35, Forum Building Examples (bottom)Lesson 36, Blog building examplesLesson 37, Server configuration optionsLesson 38, RDB persistenceLesson 39, AOF persistenceLesson 40, Server ManagementLesson 41, IntroductionLesson 42, Replication and Sentinel (top)Lesson 43, Replication and Sentinel (below) newLesson 44, Twemproxy (UP)Lesson 45, Twemproxy

,count (*) from the T GROUP by goods_id ORDER by NULL;8 Avoid random record fetchingSELECT * from T1 WHERE 1=1 ORDER by RAND () LIMIT 4;MySQL does not support function indexing, which causes full table scan-–>SELECT * from t1 WHERE ID >= ceil (RAND () *1000) LIMIT 4;9 prohibition of unnecessary order by orderingSELECT count (1) from the user u left JOIN user_info i to U.id = i.user_id WHERE 1 = 1 ORDER by U.create_time DESC;-–>SELECT count (1) from the user u left JOIN user_info i on u.id = i.us

uninstall the application selected, in the right position, will render the software all the binaries, can be cleared all at once.Figure: Cleanmymac Uninstall functionSince the removal of the software files is optional, so if you uninstall the software you want to keep the files, as long as the tick is removed, this setting by the user's favorite. When uninstalling the software, if the files are not purged, it is easy to cause the disk pressure, so that other software will be prone to the phenom

Article Title: Five minutes faster than twice your Firefox. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. 1. Enable pipeline technology Browsers usually send requests to the server and wait until the server responds. The pipeline technology allows users to input multiple requests before the server responds, which

Ubuntu10.10 is faster, more friendly, and more intelligent. What needs to be ensured before installation: Do you need to allocate disk space and create an avatar for yourself? This is simple, and there are no additional options to confuse you! I prefer faster installation. Ubuntu 10.10 is faster, more friendly, and more intelligent. Before installation, make sur

, over time, the total user memory over 2G, the program will be directly collapsed. At this point you will certainly ask, how should I solve this problem? Since we can't count how much user memory is being used, how much more can we get new? Fortunately, Microsoft has provided us with a good allocation heap method, which is to allocate the heap with HeapAlloc. You must call HeapCreate to create the secondary stack before calling HeapAlloc, and remember that heapcreate corresponds to Heapfree,hea

Too lazy to translate, to the effect: Top N and SET rowcount n are the same fast when there is a suitable index. But for an unordered heap, top n is faster. The principle of looking at English to go. Q. Is using the TOP N clause faster than using SET ROWCOUNT N to return a specific number of rows from a query? A. With proper indexes, the TOP N clause and SET ROWCOUNT N statement is equally fast, but with un

Making Oracle run faster 2-database design and optimization based on massive data Edit recommendations The first domestic project was created based on the author's 10 years of work experience. Books on Database Design and Optimization Based on massive data Basic Information Author:Tan Huaiyuan Series Name:Itpub Technology series Press: Electronic Industry Press ISBN:9787121139215 Mounting time: 2011-8-1 Published on: February 1, July 2011 Http://pro

How to optimize Firefox faster than chrome Firefox has always been much faster than IE, but after Google Chrome is released, Firefox is more like a tortoise in the race than Firefox. This articleArticleProvides optimization methods to make Firefox faster than chrome: 1. Install bleachbit (download a multi-language version that supports Linux and Windows and is

DNS is used whenever you use the Internet. Every time you send an email or surf the internet, you must rely on DNS. DNS is responsible for the ing between host names and interconnected network addresses, which is handled by computers. If the connection to the DNS server is delayed, or if the DNS server resolves an address too long, the access will be delayed. If domain name resolution can be accelerated in some way, the speed of surfing the Internet can be accelerated. The following describes a

Many programmers like to use strlen () Mb_strlen () These functions when judging the length of a string, although they have always been a professional test string length, but they do not know Strlen () Mb_strlen () These functions are not optimal. In fact, PHP determines the string length, using Isset () at a faster speed than strlen (), execution is more efficient. PHP determines the string length, uses isset ()