1, ES backup
1.1 basic concepts
Elasticsearch replica provides high reliability; partial node loss can be tolerated without service interruption. However, replicas do not provide protection against catastrophic failures. In this case, it is necessary to back up for processing. backup Elasticsearch clusters can us ...
Event source and cluster are introduced earlier. Now it's time to discuss CQRS. CQRS is the mode of separation of reading and writing, which is composed of independent writer program and reader program. The specific principle has been introduced in previous blogs. Akka typed should naturally support ...
Posted by dustbuster on Thu, 25 Jun 2020 19:26:59 -0700
From Rancher Labs
About the author
Wang Hailong, technical manager of Rancher China community, is responsible for the maintenance and operation of Rancher China technology community. With 6 years of experience in the field of cloud computing, it has experienced the technological transformation from OpenStack to Kubernetes. No matter the underl ...
Posted by anon_amos on Sun, 14 Jun 2020 23:59:41 -0700
Mongodb's export mongodump is used in combination with mongorestore import tool. Can be used for database backup and restore.
mongodump is a utility for creating binary exports of database content. mongodump can export data from mongod or mongos instances; that is, it can export data from independent, replica set and shard cluster deployment.I ...
Posted by rmbarnes82 on Wed, 27 May 2020 06:10:35 -0700
In our actual production containerization deployment process, we often encounter the situation that the Docker image is large and the deployment and release are slow
There are three main factors that affect the image size of docker:
The size of the underlying mirror. Try to choose Apache as the basic image to reduce the built-in sof ...
Posted by mattr on Wed, 27 May 2020 01:43:37 -0700
Part I This paper introduces the use of event bus in guava package, and deeply understands the implementation details in the source code
First of all, we need to look at the EventBus class. There are many comments on the class, which are summarized as follows:
Eventbus ensures that subscribers will not be accessed at the sam ...
Posted by porta325 on Mon, 25 May 2020 18:25:41 -0700
In general, many APP s have a novice-guided process after the first installation starts, but each uses a different approach.Recently, when I did this, I no longer made wheels [I couldn't actually make it myself...) Find a more beautiful framework for beginners'guidance layer.
Introduction to TourGuide
A framework ...
Spring Cloud Config
Create configuration center
💡 In the previous article, we introduced a new component Zuul, which is a gateway component. It receives Api requests uniformly. Based on the gateway, we can process all requests, log records, request authorization and other oper ...
Posted by pradeepss on Fri, 15 May 2020 02:28:10 -0700
0. Create module
1. Import dependency:
2. Add notes to the main program:
3. Configure application.yml:
💡 The previous article introduced a new component, hystrix. Hystrix is a fuse, which can be used to solve the problem of service fuse and service degradati ...
Posted by BradZynda on Fri, 15 May 2020 00:58:16 -0700
Ftrace and its functions
Ftrace is a tracker of the kernel, which helps developers to check the operation of the kernel, so as to better analyze performance problems.
Ftrace can help us analyze kernel specific events, track dynamic kernel functions, call stacks and stack usage. It can also help us track delays, such as when i ...
Posted by [n00b] on Thu, 14 May 2020 07:02:44 -0700