Tag:cache

  • Redis integrates spring and uses cache instances

    Time:2020-1-11

    1、 About redis What is redis? Redis is a key value storage system. Similar to memcached, it supports more value types, including string, list, set, Zset and hash. These data types support push / pop, add / remove, intersection, union, difference, and richer operations, all of which are atomic. On this basis, redis supports various […]

  • Distributed system concerns: write DB first or cache?

    Time:2020-1-8

    If you see my article for the second time, welcome the end of the code to subscribe my personal public number (cross border architect) yo! The length of this paper is4209Words, recommended reading12Minute.Adhere to the original, every article is the work of the heart ~ In the previous “360 ° comprehensive interpretation of cache“, we […]

  • Redis in my eyes

    Time:2020-1-7

    Introduction openMicrosoft To-DoDiscoverRedisOur study plan is still there. Actually, I am right.RedisMy understanding of this word is only at the level of my understanding of this word. Study brief introduction It wasRedisIt’s not interesting. It’s just a cached database? Until last configurationspring-redisWhen I found out that there was no user name for this thing. spring: […]

  • Grep of three swordsmen

    Time:2020-1-7

    Basic usage of grep Search criteria keyword tool grep[OPTIONS]PATTERN[FILE…] –Color: highlight the matching string -v: Display cannot be matched by pattern -i: Ignore character case -o: Show only strings that match -q: Silent mode, no information output -A: after, the last line matched -B: before, the first line matched to -C ා: context, matching to […]

  • An example analysis of Ajax’s cache processing method

    Time:2020-1-7

    An example of this article describes how Ajax handles caching. To share with you for your reference, as follows: cache The browser needs to obtain many CSS, IMG, JS and other related files from the server for one request. If the relevant resource files are loaded once for each request, the bandwidth, server resources, and […]

  • Redis + spring cache instance in Windows

    Time:2020-1-6

    1、 Redis understands 1.1 introduction to redis: Redis is a key value storage system. Similar to memcached, it supports more value types, including string, list, set, Zset and hash. These data types support push / pop, add / remove, intersection, union, difference, and richer operations, all of which are atomic. On this basis, redis supports […]

  • Dirty reading, unreal reading and non repeatable reading? Why?

    Time:2019-12-27

    Preface: Consistency means that the integrity constraints of the database are not broken before and after the transaction. This means that database transactions cannot destroy the integrity of relational data and the consistency of business logic.Example: for a bank transfer transaction, no matter whether the transaction succeeds or fails, the total deposit amount of a […]

  • Kerberos common commands

    Time:2019-12-18

    Kinit commandKinit obtains and caches the initial bill granting bill of principal kinit -kt /opt/hive.keytab hive -k [ -i | -t keytab_file ]Request a ticket obtained from the key in the local host’s key table. The location of the key table can be specified with the – t KeyTab? File option, or the use of […]

  • Redis talk

    Time:2019-12-13

    Here are the basic knowledge points of redis: Single process: a single process model to handle client requests. The response to events such as reading and writing is achieved by wrapping the epoll function. The actual processing speed of redis depends entirely on the execution rate of the main process. Epoll is an improved epoll […]

  • Bowl – lightweight front-end resource cache loader

    Time:2019-12-13

    Now there are more and more single page applications, and more and more things can be done by the front-end, but the following problem is that the volume of CSS and JavaScript code of a single page application is also growing. Every time an application is initialized, it needs to load these huge resources. Although […]

  • Cache server varnish

    Time:2019-12-12

    Blog reference http://www.178linux.com/76700 http://www.mamicode.com/info-detail-229142.html About varnish Varnish is a very lightweight and powerful application that provides caching services. It is a high-performance and open-source reverse proxy server and HTTP accelerator; The configuration of varnish is realized through VCL cache policy tool, which is a simple programming language, and users can customize variables There are several […]

  • Publish subscriber model in CRM Middleware

    Time:2019-12-10

    From the transaction code smw01, it can be observed that a BDOC may be sent to more than one destination site. For example, the five sites shown in the figure below will receive the site, while the highlighted SMOF? Erpsite represents that the client 504 of ERP system Qi3 will receive the BDOC. So where […]