Tag:Memory

  • Cgroups of docker Technology Foundation

    Time:2021-12-30

    brief introduction As we all know, docker containers have good isolation. We can run many docker containers on one server.Although a server can run many docker containers, these containers share the CPU and memory resources of a server. If the containers are allowed to use resources at will, it is likely that some containers occupy […]

  • The difference between memory and hard disk

    Time:2021-12-30

    Many computer Xiaobai still have questions, that is, what is the difference between memory and hard disk? Why is the same 300 yuan, buy memory can only buy 8GB capacity, and hard disk can buy more than 250GB. Memory is also called internal memory. You can understand it as a transfer station for the exchange of […]

  • [open source] csharpflink (net 5.0 Development) distributed real-time computing framework, PC 100000 data point second level computing test description

    Time:2021-12-30

    GitHub address: https://github.com/wxzz/CSharpFlinkGitee address: https://gitee.com/wxzz/CSharpFlink reference resources:[open source address] give up Flink NET5. 0 development csharpflink, brief design, deployment and secondary development instructions.  1. Computer hardware configuration CPU: 4-core i5-7400, 2.7ghz, memory: 16g, random data point time window and calculation operator, CPU and memory usage of master node: 15% – 35%, 1500mb-2048mb, CPU and memory […]

  • Interpretation of Vue server renderer source code and its implementation in react

    Time:2021-12-30

    preface In the process of blog development, there is a need to be solved in the SSR development environment, The code of the server is directly packaged into a file through webpack (because it contains isomorphic code, that is, the component code of the front end shared by the server and the client), write it […]

  • Deep parsing segmentation and paging

    Time:2021-12-30

    Segmentation and paging introduction What are fragments? Predecessor of segment model: base address plus boundary register (dynamic relocation) Segmented management Segmented thought Segmented address translation Another advantage of segment: good support for sharing Virtual address translation is too slow? Disadvantages of segment: too many external fragments Paging management Pagination thought Paging address translation Disadvantages of […]

  • Componentization

    Time:2021-12-29

    Componentization 1. How to realize componentization1) First create a shell project.2) Integrate different functional modules and business modules in shell engineering.3) Use cocoapods to manage each module.4) Use jlrouter to manage jumps.5) Manage message distribution using runtime.6) Create middleware to manage the communication and jump between different components such as a, B, C and D. […]

  • Detailed explanation of juicefs cache policy

    Time:2021-12-29

    For a file system driven by the combination of object storage and database, caching is an important link for efficient interaction between local clients and remote services. The read-write data can be loaded into the cache in advance or asynchronously, and then the client interacts with the remote service in the background to upload or […]

  • Research on restart failure of mongodb instance (caused by large transaction redo)

    Time:2021-12-28

    1. Instance restart background According to the feedback from the students in the monitoring group, the application connecting to a mongodb instance took an abnormal time and timed out. Check the database monitoring platform and find that the IO of this instance server is soaring abnormally. Check the replica set status (rs.status()), the master-slave is […]

  • Flink real time metrics

    Time:2021-12-28

    At present, our Flink task runs on the yarn cluster. When facing the following problems Is the resident real-time job running stably? What is the processing capability of real-time data? Consumption is too slow? Do you need to apply for more resources to improve your consumption ability? Reliable real-time data quality? Is there a risk […]

  • Do operation and maintenance and send you 7 common server resource monitoring tools

    Time:2021-12-28

    Absrtact: the server monitoring tool is very powerful. We can understand the function and performance of the server whenever and wherever. The use of server monitoring tools can let us clearly know that users can open our website and ensure that the network speed is not slow. Here are a few common server monitoring tools […]

  • Xiaobai can understand! The java knowledge point manual compiled by Tsinghua Xueba makes you from 0 to 1

    Time:2021-12-28

    Today’s sharing begins. Please give us more advice~ Today, let’s introduce Java cache and dynamic proxy. Caching can make the pages that originally open slowly become “second open”. Almost all the apps and websites you usually visit involve the use of caching. Proxy mode is to provide a proxy for other objects to control access […]

  • Redis cache performance practice and summary

    Time:2021-12-28

    1、 Foreword In Internet applications, caching has become a key component of high concurrency architecture. This blog mainly introduces the typical scenarios of cache usage, practical case analysis, redis usage specification and conventional redis monitoring. 2、 Common cache comparison Common caching schemes include local caching, including HashMap / concurrenthashmap, ehcache, Memcache, guava cache, etc. caching […]