分布式爬虫 - scrapy-redis 分布式系统？

现在可以从网上下载这些代码，怎么进行部署和运行代码从github上下载了关于分布式的代码，不知道怎么用，求各位大神指点下。。。下面是网址https://github.com/rolando/scrapy-redis环境已经按照上面的配置好了，...

迷茫 2017-04-24 09:11:57 0  2  580

java - Distributed transaction processing solution

Do you need distributed transactions when deploying hibernate on multiple web servers to operate the database? Will there be any problems using the traditional stand-alone method to access the database? How does the industry deal with this problem?

女神的闺蜜爱上我 2017-06-23 09:14:37 0  1  1251

mongodb分布式存储的原理是什么？

这两天刚开始学mongodb，试着建了分布式存储。 不明白他的基本原理是什么？ 我的测试数据库： weibo文档里有0.156G数据 建立了四个shard节点，发现每个节点的数据是平均分的，这是怎么实现分配的？ 然后我把整个w...

怪我咯 2017-04-24 09:13:36 0  1  676

Regarding the dynamic separation of Nginx and Tomcat and the problem of load balancing configuration files

Xiaobai sincerely asks for advice. The picture above is the configuration file of Nginx. If it is written like this in index.jsp: <img src="img/test.png" > In this case, is load balancing achieved? If not, how should it be configured? ? This img/test.png image is found when l...

滿天的星座 2017-05-16 17:18:23 0  2  541

How to achieve high availability with nginx load balancing

Use nginx to implement simple load balancing. The configuration is as follows {code...} The problem now is: if both tomcats are normal, nginx can distribute requests to the specified server normally. Using polling, the weight can also be adjusted. It works, but if I shut down one of the tomcats, the...

天蓬老师 2017-06-10 09:49:33 0  2  774

How to distribute duplicate rows in MySQL output?

I have a MySQL query that outputs rows in random order. Each row has a name column, and sometimes queries may produce duplicate rows (rows with the same value for name) - this is by design. However, sometimes queries accidentally group duplicate rows directly together in the output. I'm trying to fi...

P粉805107717 2023-09-13 15:45:37 0  1  647

How to redirect to exact URL when using nginx for load balancing configuration

For example, when using nginx to configure load balancing, how to redirect to the specified URL, not just the domain name or IP. {Code...} Please give me some guidance.

世界只因有你 2017-05-16 17:13:20 0  1  528

Concurrency, message queue, load balancing, caching, distribution, security, are these the highlights of your resume? Java fresh graduate, internship for more than half a year

Concurrency, message queue, load balancing, caching, distribution, security, are these the highlights of your resume? Java fresh graduate, internship for more than half a year

漂亮男人 2017-06-12 09:27:05 0  13  2056

nginx - How does load balancing calculate the number of visits to all LAN IPs under the same public network address?

How does load balancing calculate the number of visits to all LAN IP addresses under the same public network address? The load we are currently using is a product of a certain manufacturer (to avoid suspicion of advertising, the manufacturer name will not be mentioned). The load provides a public ne...

巴扎黑 2017-05-16 17:24:40 0  1  580

nginx - Questions about server load balancing and high availability

Please answer some questions about server high availability! For example, if ngnix is ​​used as an intermediate server and the reverse proxy web server (tomcat) is used for load balancing, is this considered high availability? Then I was afraid that ngnix would hang up and I used lvs+keepalived as m...

漂亮男人 2017-06-29 10:09:13 0  2  1100

objective-c - iOS集成友盟社会化分享微信无法登录？

iOS集成友盟社会化分享SDK-5.0 点击微信登录的时候出现无法获取accessToken的现象，其他如QQ、微博都可以正常登录使用。另外QQ、微博和微信分享都可以正常使用。望各位早日帮我解决或者分析一下。谢谢 {代码...} ...

滿天的星座 2017-05-02 09:19:26 0  1  571

nginx - load balancing issues

What are the similarities and differences between nginx/zookeeper load balancing functions?

我想大声告诉你 2017-05-16 17:21:15 0  1  726

javascript - How to always fix a div in a certain position; no matter how the screen and resolution change; the div position will always remain the same

How to always fix a div in a certain position; no matter how the screen and resolution change; the div position will always remain the same

世界只因有你 2017-06-24 09:43:50 0  4  860

javascript - Encapsulate the repeated parts of these two functions into one function?

{Code...} The two functions are very similar (repeated). How to encapsulate the repeated parts of these two functions into one function?

大家讲道理 2017-05-19 10:09:46 0  3  650

The thinkphp5 database connection is normal but a Server Error is reported when logging in to the background?

Server configuration php7.2+mysql database+Nginx load balancing

初学编程 2021-11-28 11:08:14 0  5  1270

TP comes with these methods, why do you need to encapsulate one yourself?

TP comes with these methods, why do you need to encapsulate one yourself? Isn’t the official one bad?

youyuan 2018-05-27 16:49:28 0  0  1015

redis - hibernate 映射实体，里面有多对一，一般用实体，还是实体ID

我现在在开发一套系统,在orm时打算用hibernate。 {代码...} 的确用类的话，查询会比较方便，但是后期分布式部署,要把mission放入缓存，打算用redis,可是redis不能序列化mission中的member。所以用那个方案比较健...

给我你的怀抱 2017-04-24 16:01:00 0  0  723

What is the essential difference between hyper-converged servers and cloud servers?

1. There are three main categories of cloud computing: private cloud, public cloud, and hybrid cloud; there are three main levels of cloud computing services: IAAS, PAAS, and SAAS. 2. The IaaS layer is the core and most basic part of the private cloud, and it is also the first part that enterprise I...

七秒 2021-10-27 09:41:40 0  2  2445

java - dubbo distributed call passing parameters

Background: The existing code is being modified. The original structure is to directly complete all business logic through the service() method of the servlet. Now the structure is modified, the service() method is split into several services, and the services are assembled through the dubbo framewo...

给我你的怀抱 2017-06-14 10:51:38 0  1  916