is elasticsearch nosql database

Internet, and there are many factors that make it difficult to conclude, but it is clear that it is "good enough". The great success of MySQL also created the later NoSQL tides, but as NoSQL's definition slowly cooled down to "not just SQL" by "Don't SQL", and slowly supported the SQL-like language, after all this, Baron Schwartz believes that the relational

Label:1. Relational databaseRepository for permanent data storagePHP variables are only temporary storage space "use memory space" to save variables during PHP script execution.Relational database: Use the relationship between the two to describe the entity information. "Using two-dimensional table field names and fields values to describe""Relational databases are not meant to use foreign keys to construct two tables as associations, but rather to im

,,What is the design principle of nosql? Is there a paradigm similar to that of relational databases? I also found an article:Http://www.cnblogs.com/AllenDang/p/3507821.html! CommentsBasically, the design idea is what I mentioned above: Put the blog and comments together.This reduces the number of queries.However, a p

Do a year's freshman year project, for relational database structure or some understand, sometimes still feel that the two-dimensional table is not very comfortable. After reading an article, there is a preliminary understanding of NoSQL (Https://keen.io/blog/53958349217/analytics-for-hackers-how-to-think-about-event-d

The main characteristic of Cassandra is that it is not a database, but a distributed network service composed of a bunch of database nodes, a write operation to Cassandra will be copied to the other nodes, and the read operation to Cassandra will be routed to a node to read. For a Cassandra cluster, scaling performance

SSDBA high-performance NoSQL database that supports rich data structures to replace Redis.Characteristics 100 times times the capacity of Redis instead of Redis database LevelDB network support, using C + + development Redis API compatible, support for Redis clients Suitable for storing collection data, such as list, hash, zset ... The la

Objective:two days before finding out how to extend Log4net's log format when finding an open source project Log4net.nosql, it extends The Appender implements the output of the log to Elasticsearch inside. Follow-up, found involved in a lot of projects, so intend to study, recorded here. A brief introduction to the project, details click on the link to the project homepage to view, and finally provide packaging download:1. Log4net.nosqlA collection of

Key-Value Store databaseTemporary: as memcached. The temporary key-value database stores the data in memory, which in two cases results in the loss of data, the first is the power outage, but the data content exceeds the memory size. The benefits of this treatment are very fast.Permanent type: such as Tokyo Tyrant, flare and RomaThe two are both types: Redis. Redis first data in memory, and then meet certai

the Shard size. Summarize 1, why do not use relational database to do the search? Because the database to implement the search, performance will be very poor, can not be word search. 2. What is full-text search, inverted index, and Lucene? Predecessors have summed up, please refer to the "hands-on teaching you full text search" Apache Lucene 3, the characteristi

-analysis-ikMmseg word breaker add-on project address: https://github.com/medcl/elasticsearch-analysis-mmsegIf you feel the configuration is troublesome, you can also download a configured ES version, the address is as follows: Https://github.com/medcl/elasticsearch-rtfbasic usage of ElasticsearchThe biggest features:1

In-depth analysis of NoSQL database distributed algorithms (graphic details), nosql text Although the NoSQL movement has not brought about fundamental technological changes to distributed data processing, it still triggers overwhelming research and practices on various protocols and algorithms. In this article, I will

the time, I later on the Internet access to more information, found that my understanding is only partial. (Even the author's understanding is wrong, such as the author of 2.1.5 The consistency of the simple understanding of the role of check constraints) in fact, the primary foreign KEY constraints, check constraints are the scope of database integrity (why

Tags: relational data table NoSQL database L database Combat div operation Field Why NoSQL is produced: The fact that relational databases are not good at doing so is the reason why No