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Technical Articles

Database

What database is Redis?

Redis is a very fast, open source, written in ANSI C language, supports network, can be memory-based and persistent, log-type, non-relational type, Key-Value database, and provides APIs in multiple languages.

Jun 11, 2019 pm 04:23 PM

redis 数据库

How to understand redis

Redis is a high-performance key-value database. The emergence of redis has largely compensated for the shortcomings of key/value storage such as memcached, and can play a very good supplementary role to relational databases in some situations.

Jun 11, 2019 am 10:39 AM

redis

What is redis?

Redis is an open source log-type Key-Value database written in ANSI C language, supports network, can be memory-based and persistent, and provides APIs in multiple languages. In short, redis is a key-value storage system .

Jun 10, 2019 am 10:46 AM

redis

What are the data types of Redis?

Redis supports five data types: string (string), hash (hash), list (list), set (set) and zset (sorted set: ordered set).

Jun 06, 2019 pm 04:21 PM

redis 数据类型

How to achieve persistence in redis

All Redis data is stored in memory and then asynchronously saved to disk from time to time (this is called "semi-persistent mode"); you can also write every data change to an append only file ( aof) (this is called "full persistence mode").

Jun 06, 2019 pm 02:16 PM

redis持久化

What is redis persistence

Redis is an advanced key-value database. All data in Redis is stored in memory. If redis crashes, it will be lost. Redis persistence is to save data to disk (a storage device that can be permanently saved) for data recovery.

Jun 06, 2019 pm 02:06 PM

redis 持久化

What data structures does Redis support?

Redis is a key-value dictionary database. Data is generally accessed in memory. At the same time, there are different data types for different needs. Redis supports five data type structures, namely string, list, dict, zset, and hash.

Jun 05, 2019 pm 04:48 PM

Redis

What application scenarios is redis suitable for?

Redis is a memory-based key-value dictionary database with fast access speed and excellent performance. It has many application scenarios. The cache feature can be used to implement hot data and counter functions. It is also fast to read and can be used as a queue, message subscription and publishing, and also Distributed clusters can be used to implement the flash sale function.

Jun 05, 2019 pm 04:38 PM

Redis

Which one is better between redis and mongodb?

Redis is an open source memory-based key-value database, while MongoDB is a database based on distributed file storage. The two data targets are different. The specific choice needs to be made according to the needs of the project. Redis is suitable for fast reading, and MongoDB Suitable for distributed storage of complex data.

Jun 05, 2019 pm 04:22 PM

Redis

Database type

Databases are divided into relational databases and non-relational databases. Commonly used relational databases include MySQL, MariaDB database, SQL Server database, and Access database; commonly used non-relational databases include memcached, Redis, MongoDB, Cassandra, etc.

Jun 05, 2019 am 10:41 AM

数据库

What language is redis written in?

Redis is an open source log-type Key-Value database written in ANSI C language, supports network, can be based on memory and can be persisted. It supports relatively more stored value types, including string, list, set, zset and hash type.

Jun 04, 2019 pm 04:11 PM

redis

MemCache caching and Session (knowledge summary)

Memcache is a distributed caching system developed by Brad Fitzpatrick of LiveJournal, but it is currently used by many websites to improve website access speed, especially for some large websites that require frequent database access. The effect of improving access speed is very significant. .

May 30, 2019 pm 02:25 PM

MemCache Session

Is redhat a linux system?

RedHat is a Linux version system released by RedHat Company, which has high efficiency, scalability and reliability. Red Hat Enterprise Linux is primarily kernel-based virtualization, with the KVM hypervisor fully integrated into the kernel, so all RHEL system improvements benefit virtualized environments.

May 28, 2019 pm 05:19 PM

redhat

Why use redis for caching?

Reasons to use redis for caching: 1. Redis can use dozens of gigabytes of memory for caching; 2. Redis’s cache can be persisted; 3. Redis can implement distributed caching; 4. Redis can process millions per second Level of concurrency, it is a professional caching service; 5. Redis cache has an expiration mechanism; 6. Redis has a rich API.

May 21, 2019 am 10:38 AM

redis缓存