what is reverse geocoding

the application server, and then return the results to the client, here nginx role is reverse proxy server. It also brings a benefit, in case one server hangs up, as long as there are other servers running properly, it will not affect the user's use. Through Nginx's reverse proxy, we reached the Web server, the service-side script to process our requests, access

architecture Design high concurrent ultimate solution or the latter: horizontal expansion. In the Internet layered architecture, the practice of horizontally expanding at different levels is different: (1) The reverse proxy layer can be extended horizontally through the way of "DNS polling"; (2) The site layer can be expanded horizontally through nginx; (3) The service layer can be expanded horizontally th

What is Chinese Word Segmentation? As we all know, English is based on words. Words and words are separated by spaces, while Chinese is based on words. All words in a sentence can be connected to each other to describe a meaning. For example, the English sentence I am a student, in Chinese,

Chinese What is Chinese participle? As we all know, English is a unit of words, words and words are separated by space, and the Chinese word is the unit, all the words in the sentence to describe a meaning. For example, English sentence I am a student, in Chinese is: "I am a

that we want to request the picture cannot be found.To solve this situation, we came up with a distributed. We set up a picture server to store images. So when we all upload the picture, regardless of which server receives the picture, the picture is uploaded to the image server.An HTTP server needs to be installed on the image server, using Tomcat, Apache, and Nginx.See here you may ask, since we have to choose the HTTP server, why not continue to u

vro over one network to another.Multicast Routing Protocols are classified into intra-domain multicast routing protocols and Inter-Domain multicast routing protocols.Http://wenku.baidu.com/view/b30740553c1ec5da50e27015.html Multicast forwarding technology:In unicast, data is forwarded based on the destination address of the data packet. The destination address clearly indicates the location of a host, but multicast data packets are not the destinat

most basic question, "What is functional programming", can not be easily understood on the Internet. Here is my "functional programming" study notes, shared, and discussed with you. The content does not involve mathematics (Lambda calculus I do not understand), nor does it involve advanced features (such as lazy evaluation and currying), but simply as simple as

C ++ starts from scratch (5) -- What is a pointer? (This article is the first time to write and has incomplete thinking, which may lead to conceptual confusion and is not recommended for reading. For more information, see pointer and its semantics and application.) This article describes the key to the duplication

recommend your site, this recommendation, whether the user has value." According to what the "this link is the user or the other site really recommend your site, this recommendation, whether the user has value"? The most simple and effective evaluation method is a chain whether a certain number of users of natural clicks, so to speak, produce a certain amount o

-- What is a pointer? This article describes the key to the duplication in C ++-pointer type and two meaningful concepts-static and dynamic. Array As mentioned above, the memory is accessed through variables in C ++, but according to the previous instructions, C ++ can only use variables to operate the memory, that is

three functions like Haskell and then directly call it in this SuperApply. Some may say that this is not because Haskell has foldr. Let's take a look at how C # With foldr (reverse + aggregate = foldr) can be written: T SuperApply C # basically, it has reached the same description process as Haskell, and the following code can also be written, that is, the nois

can the actual project do? (Authentication, forwarding, caching, reverse proxy, etc.) and what is Tomcat's relationship? Understand the Ajax cross-domain reason at a minimum? How to solve? (Key knowledge, do se can not avoid the problem.) Here a lot of knowledge points. ) jsonp principle? Do you need to change the background? (Jsonp

intermediate code to the interpreter (or to other modules that generate C or bytecode). It sounds complicated, but Perl's compilers and interpreters are quite efficient at doing this, and our compilation-run-modify process is almost always in seconds. Coupled with many other development features of Perl, this fast-changing role model is ideal for quick prototyping. Then, as your program matures, you can gr

words and words in a sentence are connected together. Search engines must first distinguish which words form a word, and which words themselves are a word. For example, "weight loss method" will be word for "weight loss" and "method" two words. There are basically two kinds of Chinese word segmentation methods, one is based on dictionary matching, the other is based on statistics. Based on the dictionary

, improving network flexibility and availability. Server Load balancer has two meanings: first, a large amount of concurrent access or data traffic is distributed to multiple node devices for separate processing, reducing the user's waiting for response time. Second, computing of a single heavy load is distributed to multiple nodesPoint devices perform parallel processing. After each node device finishes pr

Transferred from: http://java.tedu.cn/ask/203119.htmlCompilation and decompile of Java codeFirst, what is the compilation1, the process of generating the target program from the source program written by the compiler program from the source language.2, using the compiler program to generate the action of the target program. Compilation is the high-level language

"Netizen asks a question": have been not clear exactly what difference does photoelectric converter, fiber transceiver, light cat, light module have? "Answer": Optical module is inserted in the router or switch, can not be used independently, belong to other devices part. and netizens mentioned (photoelectric converter, optical transceiver, light cat, optical module) A few things are basically one thing,

I used single quotes during table creation and query in MySQL. later I found a problem and reminded me to use backquotes. recently I found that backquotes may also cause problems: 1. 2. on the Internet, we can see that the backquotes are used to distinguish reserved and common characters in MySQL. in this case, 2nd can be explained, but why are 1st characters. What are the differences between single quotes and rev