CoinCap API Query Mainstream Exchange Transaction Basic Data Block Chain Data Development Practice

Introduction: CoinCap is a useful tool for querying real-time pricing and marketing activities for more than 1,000 encrypted currencies.By collecting exchange data from thousands of markets, we can provide transparent and accurate data on asset prices and availability.This paper summarizes the basic operation and introduction of Co ...

Posted by dynamicallystatic on Sat, 11 May 2019 20:54:06 +0200

Distributed Project Mapping Server Data Mapping

In the last section, the implementation of CoAp client and server, the data is also sent to kafka in the format defined by the installation, followed by the implementation of Mapping server, which maps physical device data to abstract devices and gives data business meaning. iot-mapping Building iot-mapping module, introducing kafka public modu ...

Posted by nominator on Sat, 11 May 2019 20:02:02 +0200

cesium offline service settings

1. data sources 1) Satellite image texture. sxearth and other software are used to download and store data in tms format from existing network map service providers.2) DEM data. The global data available for download are SRTM V4.1, AW3D30, TanDEM-X, etc. 2. DEM data preprocessing Cesium supports two formats of terrain: quantized-mesh data and ...

Posted by ayj on Sat, 11 May 2019 19:25:35 +0200

Java Paging Principle

Links to the original text: https://blog.csdn.net/winfredzen/article/details/52104251 Java paging Common paging types: Traditionally, using the traditional paging method, data information can be clearly obtained, such as how many pieces of data, how many pages to display and so on. Drop-down pagination: Pull-down pagination ...

Posted by moonoo1974 on Sat, 11 May 2019 17:12:42 +0200

Canvas Utility Library Fabric.js Manual

brief introduction What is Fabric.js? Fabric.js is a library that can simplify Canvas programming. Fabric.js provides Canvas with the missing object model, svg parser, interaction and a set of other indispensable tools. Because Fabric. JS is a foreign framework, the official API is messy and numerous, most of the relevant documents are English ...

Posted by guttyguppy on Fri, 10 May 2019 21:12:38 +0200

Analysis of RPC and WebService

Although SpringCloud and Dubbo(x) are the main technologies in the popular RPC technology, some more traditional technologies cannot be avoided if interface calls are made.I happened to use WebService's technology the other day when making interface calls (Sections 8,9 are real development), which is exactly what I wrote here. 1. RPC-related ...

Posted by horseatingweeds on Fri, 10 May 2019 16:33:10 +0200

Wechat Public Number Development + node.js Server Deployment

Application for Wechat Public Account; Official website 2. Developing documents; Website III. Application for Interface Test Number and Test Connection url: To be accessed by the external network, the local server can build ngrok. Of course, if you have money, you can buy one; ngrok runs differently every time. Instructi ...

Posted by vmarellano on Fri, 10 May 2019 09:02:02 +0200

Write a Telegram Bot from scratch

Telegram offers a wealth of API Let's develop a bot robot very conveniently. At the same time, Community The underlying API has also been encapsulated in various languages, so this paper uses node-telegram-bot-api To implement bot quickly Note: Due to the domestic network, Telegram bot needs to open the ladder and choose the global agent mode!! ...

Posted by WebGeek182 on Fri, 10 May 2019 04:54:04 +0200

Spring Cloud Alibaba Integrated Sentinel Flow Control

Previously, we used to integrate sentinel dependencies directly, configure rules by encoding, and so on. Ali already has an open source framework spring-cloud-alibaba for integration into Spring Cloud, which is used to successfully integrate a series of frameworks into Spring Cloud. My version of Spring Cloud is Finchley.SR2, and Spring Boot is ...

Posted by maheshb on Thu, 09 May 2019 23:50:03 +0200

Application of Ajax

A Brief Introduction to the Use of Ajax Asynchronous Technology Ajax introduction Introduction of Development Environment Technical Code Implementation Last but not least: Ajax introduction Ajax uses asynchronous data transmission (HTTP requests) between browsers and Web servers, which enables Web pages to request a ...

Posted by tonbah on Thu, 09 May 2019 21:28:03 +0200