Programmer Think

In the previous article, we defined the project basic catalog structure.Now let's review my thoughts: Create entry file; Specify configuration, log directory; Specify the database, queue, cache component directory; Create a controller directory for data processing; Specify miscellaneous items such as public functions. Next, we'll fill in t ...

Explanation of lab2a experiment 1. raft structure complementary field of raft.go.Fields should be as close as possible to Figure2 from raft's paper. type Raft struct {     mu        sync.Mutex          // Lock to protect shared access to this peer's state     peers     []*labrpc.ClientEnd // RPC end points of all peers     persister *Persister ...

Process analysis With the help of TCP, the basic idea is as follows: The sender (client) sends the file name to the server, and the server saves the file name. The receiver (server) returns a message ok to the client to confirm that the file name is saved successfully. After receiving the message, the sender (client) begins to send the file da ...

The address of the influxdb relay project: https://github.com/influxdata/influxdb-relay, which is mainly used as a load balancing node and writes to multiple influxdb nodes for high availability. Don't talk about it~ 1,main.go 1 package main 2 3 import ( 4 "flag" 5 "fmt" 6 "log" 7 "os" 8 "os/signal" 9 ...

introduce Digital signature is a digital string that can not be forged by others only by the sender of the message. This digital string is an effective proof of the authenticity of the information. Sender: generate signature Recipient: verify signature Asymmetric cryptography In asymmetric encryption, the public key is used for encryption and ...

The blockchain tutorial Fabric1.0 source code analysis configtx ා genesis, in the second half of 2018, the blockchain industry is gradually fading away from the impetuosity and returning to rationality at the beginning of development. On the surface, the demand and value of relevant talents seem to be falling. But in fact, it is the gradual dec ...

Chain code and platform of Fabric 1.0 source code Notes 1. Overview of platforms The platforms code is centralized in the core/chaincode/platforms directory. core/chaincode/platforms directory, the programming language platform implementation of chain code, such as golang or java. Platform.go, platform interface definition, and platform related ...

Blockchain tutorial's Fabric1.0 source code analysis Ledger II. Ledger of Fabric 1.0 source code Notes Supplement the definition of commonledger.Ledger interface embedded in PeerLedger interface as follows: type Ledger interface {     GetBlockchainInfo() (*common.BlockchainInfo, error) //Get the basic information of blockchain     GetBlockByNum ...

1. Introduction of Snack3 and JSONPath Snack3 is a JSON framework that supports JSONPath.JSONPath is a powerful feature that can also be used as an Object Query Language (OQL) in the Java framework. <dependency> <groupId>org.noear</groupId> <artifactId>snack3</artifactId> <version>3.1.5.10</version&g ...

Communication model (a -- > B -- > A): a sends data to B through UDP (a can be a specified destination, or a broadcast message to b). B sends back a message to a according to the source address and port after receiving the message, which is such a simple communication process. For the explanation of golang udp, please refer to the followi ...