Programming VIP

Redis data types (5 common) typeImplementation principlestringStringhashHashMaphashLinkedListsetHashSetsorted_setTreeSet redis data storage format redis itself is a Map in which all data is stored in the form of key:value.Data type refers to the type of stored data, that is, the type of value part. The key part is always a string. 1.string ...

catalogue 1. Know Redis What can Redis do? characteristic 2. Basic knowledge Redis is single threaded Why is Redis single thread so fast? 3. Redis five data types 1,String 2,List 3,Set 4,Hash 5,Zset 4. Redis has three special data types 1,geospatial 2,hyperloglog 3,Bitmaps 5. Redis transaction 6. Redis implements optimistic ...

Five data types Official website document Redis is an open source (BSD licensed) in memory data structure storage system, which can be used as database, cache and message middleware MQ. It supports many types of data structures, such as strings, hashes, lists, sets, sorted sets and range queries, bitmaps, hyperlogs and geospatial index ...

1. Type of lock2. Characteristics of a highly robust distributed lock3. Evolution of a single redis distributed lock4. Multiple redis distributed locks5. Summary 1. Type of lockIn our daily development activities, locks are generally divided into two categories:1) Locks in the same JVM, such as synchronized and Lock, ReentrantLock, etc2) Distri ...

catalogue string basic operation Add and modify data get data Delete data Add and delete the value of key Set the life time of the key hash basic operation get data Delete data Check for data list  basic operation Add and modify data Get data set basic operation Add data get data Delete data sorted_set basic operati ...

1, Cache conceptual knowledge 1. What cache is it The word Cache is often heard in daily life. What is Cache? In fact, Cache is the buffer of data exchange (called Cache), which is the place where data (frequently used data) is temporarily stored. When users query data, they first look for it in the Cache. If they find it, they will execu ...

Redis traverses and vaguely matches the two commands key s and scan (python uses redis) (1) Full traversal – keys command Get all keys in Redis: import redis pool=redis.ConnectionPool(host='10.3.1.151',port=6379,password='mca321',db=2) r = redis.tRedis(connection_pool=pool) # Get change = all keys under the database keys = r. ...

1.String Stored data: single data, the simplest data storage type and the most commonly used data storage typeFormat of stored data: one storage space holds one dataStorage content: string is usually used. If the string is displayed in the form of integer, it can be used as digital operation 1.1 adding / modifying data set key value 1.2 d ...

We will use a series to explain the complete practice of microservices from requirements to online, from code to k8s deployment, from logging to monitoring. The whole project uses the micro services developed by go zero, which basically includes go zero and some middleware developed by relevant go zero authors. The technology stack used is bas ...

1. Cache avalanche2. Buffer breakdown3. Cache penetration4. Summary 1. Cache avalancheHow does cache avalanche happen?1) The redis service directly hangs up, and redis crashes completely2) A large number of caches in redis expire at the same time, resulting in a large number of queries directly hitting mysqlsolve1.1) redis cache cluster achieve ...