Programmer Group

Source version Kubernetes v1.5.0 brief introduction There are various resources in k8s, such as Pod, Service, RC, namespaces and so on. In fact, the user operates on a large number of resources. But these resources are not messy, they are organized in the way of Group Version. Each resource belongs to a group, and there are versions of resource ...

cron format:Time Sharing Day, Month and Week Execute every five minutes: / 5 * echo Hello > / TMP / X. log Execute every 1-5 minutes: 1-5 echo Hello >/tmp/x.log Execute once every day at 10 o'clock and 22 o'clock: 0.10,22 * echo Hello >/tmp/x.log Execute every 1-5 minutes: 1-5 echo Hello >/tmp/x.log Parse(): parsing and checking ...

gRPC Service Discovery & Load Balancing To build high-availability and high-performance communication services, service registration and discovery, load balancing and fault-tolerant processing are usually used. According to the location of load balancing implementation, there are usually three solutions: 1. Centralized LB (Proxy Model) The ...

GRPC is a high-performance, cross-language RPC framework of google open source. It is based on HTTP2 protocol, protobuf 3.x and Netty 4.x. I wrote a previous article on the use of the rpc package of the golang standard library, and this article goes on to talk about google's grpc. introduce In gRPC, client applications can directly call the m ...

Preface token package contains data structures and methods related to golang lexical analysis. The source code is located in <go-src>/src/go/token. token.go The comments in the source code are great! Token type Token is the set of lexical tokens of the Go programming language type Token int tokens The list of tokens(token ids) const ( ...

Explain A previous translation of a tutorial (without backing up the original address, the ladder was sealed). Add the original address after finding it text The field coder provided by zap is not necessarily suitable for its own needs, such as: the output of log records is expected to be similar to syslog or other common log formats; the time ...

The network port multiplexing discussed in this paper does not refer to Socket Bind multiplexing with SO_REUSEADDR option in network programming. It is more like a port forwarding tool with a specific routing function, implemented in the application layer. background The firewall in my network only opens one port, but I hope to provide a variet ...

What is cron? cron means: to plan tasks, to put it plainly, is to schedule tasks. I have an appointment with the system. It's as simple as running a task at a few minutes or seconds or every few minutes. cron expression Cron expression is a good thing. It can be used not only in Java quartZ, but also in Go. I haven't used cron in Linux, but the ...

stay In the last tutorial We created a robot that automatically responds to messages. When a user sends a message "Hello,World!", the robot automatically responds to the same message! After learning according to this tutorial, your robot will accept the encrypted currency sent by the user, and then immediately return to the user.The c ...

This blog is part of an in-depth study of Envoy Proxy and Istio.io and how it can achieve a more elegant way to connect and manage micro services. This is the idea for the next few sections (links will be updated at publication time): Circuit Breakers (Part I) Retry/timeout (Part II) Distributed Tracking (Part 3) Prometheus Index Collection (P ...