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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.

Nanopb protobuf learning

Install tool software:

$ sudo apt-get install protoc // Generate .pb file from proto
$ sudo apt-get install python // Use official python The script generates the c and h files that can be us

October 1, 2021By Simo Micro Services learning, Nanopb, Protobuf, useLeave a Comment

Cassandra – RPC timeout error when deriving data from CQL

I am trying to export data from cassandra using CQL client. The column family contains about 100000 rows. When I use the COPY TO command to copy dta to a csv file, I get the following rpc_time out

October 1, 2021By Simo Micro Services Cassandra, CQL, data, error, export, RPC, time, timeoutLeave a Comment

Investigation ideas in the K8S cluster encounter ETCD cluster faults

When creating an instance in the k8s cluster, it was found that the etcd cluster status failed to connect, causing the creation of the instance to fail. So I checked the cause.

Here is the he

October 1, 2021By Simo Load Balance cluster, encounter, ETCD, fault, investigation, K8S, Medium, thinkingLeave a Comment

When using prototype.js, “Objects expected” JavaScript error in IE8

function icPageInit()
{
$(“icImgDiv” + icAlternate()).setOpacity(0);
return true;
}
window.onload = icPageInit; This Javascript code works well in Firefox and Chrome, but the error “Object Expec

October 1, 2021By Simo Micro Services error, IE8, Interest, JavaScript, JS, object, Prototype, Prototype.js, UsingLeave a Comment

CF843D-DYNAMIC-ShortestPath (Dynamic Short Off)

Dynamic Shortest Path: CF843D Dynamic Shortest Path Question:
There is a \(n\) a point \(m\) edge directed weighted graph, \ (q\) Inquiries:

1 \(1 v\) Inquiries from \(1\) to the shortest p

October 1, 2021By Simo Micro Services cf, CF843D, dynamic, short circuit, ShortestPathLeave a Comment

Huawei LAB-RS-V1-1.5_Smart Link

Requirements:    SW4’s e0/0/13 is connected to SW1’s g0/0/19, g0/0/16 is connected to SW2’s g0/0/19, e0/0/13 As the master, e0/0/16 as the slave.

If there is a problem with the e0/0/13 interf

October 1, 2021By Simo Micro Services 1.5, Huawei, LAB, link, RS, Smart, V1Leave a Comment

Internet protocol (IP)

Internet protocol (IP) version 4 is the predominant protocol used at the network layer of the Internet and most other distributed systems. It is responsible for the routing of packets from the sour

October 1, 2021By Simo Micro Services Internet, IP, protocolLeave a Comment

HeartBeat Haresources configuration

1. Introduction of Heartbeat:

The Heartbeat project is a component of the Linux-HA project and the most successful example of the current open source HA project. The full name of Linux-HA is

October 1, 2021By Simo Monitoring arrangement, Haresources, HeartbeatLeave a Comment

CLOJURE – Extension Core.Logic to Custom Types

I am experimenting with core.logic and want to enable my own custom data type to participate in logical expressions:

(deftype Expression [node vars]
….) Basically, this means a node in the

October 1, 2021By Simo Micro Services CLOJURE, Core, Core.Logic, Custom, Extension, logic, typeLeave a Comment

heartbeat v1

heartbeat v1

I. Introduction to the experimental environment

Hardware: lenovo T410S

Software: VMWARE workstation

SO: Centos 6.6

< br>

Second, network topology

October 1, 2021By Simo Monitoring Heartbeat, V1Leave a Comment

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