Category: Architecture

Architectural design is the product of people’s subjective mapping of elements within a structure and the relationships between elements. Architecture design is a series of related abstract patterns used to guide the design of various aspects of large software systems. The architect’s job responsibility is to transform the customer’s needs into a standardized development plan and text during the development of a software project, and to formulate the overall structure of the project, and guide the entire development team to complete the plan. Architecture design is the early stage of the software design process, which connects the requirements analysis and the design process. The main task of an architect is not to write specific software programs, but to engage in higher-level development and architecture work. He must have a good understanding of development technology, and he needs to have good organizational and management skills.

There are a lot of Fin_Wait2, Close_Wait, Last_Ack and Time_Wait in Haproxy

We are running haproxy for about 100,000 concurrent users. But we see a lot of FIN_WAIT2, CLOSE_WAIT, LAST_ACK and TIME_WAIT in the netstat output. This output is on the 8G ubuntu-12.04 node.

October 1, 2021By Simo Load Balance ack, close, fin, Haproxy, time, wait, wait2, 很多Leave a Comment

Use the Haproxy load balance to connect the WebSocket connection with the Tornado application?

I am using a Tornado application that uses a websocket handler. I am using Supervisord to run multiple instances of the application, but I cannot balance websocket connections.

I know that ng

October 1, 2021By Simo Load Balance application, balance, connection, Haproxy, load, program, Tornado, Using, WebSocketLeave a Comment

KOLLA-ANSIBLE deployed OpenStack

Design planning
Currently, there are two types of roles designed, ceph and nova. As long as they are not nodes of the ceph cluster, they are all nova, which need to assume computing services. The c

October 1, 2021By Simo Load Balance ANSIBLE, deployment, Kolla, OpenStackLeave a Comment

Cluster concept

Cluster type: Cluster concept 1. Two key features Cluster is a group of service entities that work together to Provide a service platform that is more scalable and usable than a single service enti

October 1, 2021By Simo Load Balance cluster, ConceptLeave a Comment

prototype_s – form.submit () missed Rails.js UJS Observer

In a Rails 3 application, as long as a checkbox is toggled, I want the browser to call a remote function. In Rails 2, it’s easy to do this by passing it< /p>

:onclick => remote_function(…)

October 1, 2021By Simo Micro Services form, Form.Submit, JS, missed, observer, Prototype, rails, rails.js, submit, ujsLeave a Comment

HeartBeat CRM configuration

Test environment:

1. Turn off the heartbeat service on web1

#service heartbeat stop

#ssh web2.luochen.com’service heartbeat stop’

2. Edit the ha.cf file on web1, Enable crm<

October 1, 2021By Simo Monitoring configuration, CRM, HeartbeatLeave a Comment

Cross-server communication in the load balanced ASP.NET web application

My ASP.NET application stores some expensive (loaded) data in static fields accessible by the application (in this case using System.Web.Caching.Cache is Inappropriate).

My application is a

October 1, 2021By Simo Load Balance application, ASP, ASP.NET, balance, communication, cross, load, Medium, program, server, WEBLeave a Comment

October 1, 2021By Simo Load Balance cluster, data, page, session, storage, WicketLeave a Comment