aerospike select

Aerospike C client manual --- query-query records, aerospike ClientQuery records In addition to the primary index, the Aerospike C client also provides APIs to query databases through secondary indexes. To use the secondary index to query data, first initialize and fill in an as_query object. Then, use aerospike_query_foreach () to execute the query for the initi

Aerospike-Architecture series big data type, aerospike DatabaseLarge Data Types (big Data type) Bin of the big data type can store a large number of object sets. The object type can be Integer/String/Map/List. A single record of Aerospike can contain many such bins. Such a bin allows a large amount of data to be contained in a separate record. The limit is based

Aerospike C client manual --- establish a connection to the aerospike Client C client function library Establish a connection The Aerospike object describes a cluster. To connect to a cluster, configure an aerospike object.Configure the client To configure the client, you must provide an as_config object that is init

Secondary index of the Aerospike-Architecture series, aerospikeSecondary Index (Secondary Index) The secondary index is built on a non-primary key to give the model a one-to-multiple relationship. The index is specified based on bin (similar to columns in RDBMS ). Allows efficient updates and reduces the need for index storage resources. DDL is used to determine which bin and type are indexed. Indexes can be dynamically created or removed using tools

Aerospike C client manual --- key-value storage-read records, aerospike ClientRead records The Aerospike C client AP provides four operations to read a record from the database: aerospike_key_get()-Read all bin data of a record. aerospike_key_select()-Read the specified bin data of a record. aerospike_key_exists()-Check the existence of a record. aerospike_k

1: Download the source file? 1 wget http://www.aerospike.com/artifacts/aerospike-server-community/3.5.9/aerospike-server-community-3.5.9.tar.gz 　　 2:? 1 TAR-ZXVF aerospike-server-community-3.5.9.tar.gz CD aerospike-server 3: View initialization options and initiali

Systems Overview (System Overview)Aerospike is a distributed, extensible NoSQL database built for three main goals: Create a resilient, extensible platform that meets today's web platform applications Provides the same robustness and reliability as traditional databases (for example, ACID) Provides operational efficiency (minimum manual participation) first published on Proceedings of VLDB (Very Large Databases)in,

for pure memory without persistence, memory and persistence, or Flash (SSD)Persistent storage (disk) must be a flash or high-performance block storage device (cloud), or a file on any storage device.Data in DRAM (memory)in-memory data- No Persistence- The advantage is high throughput. Even high-performance modern flash storage performance is still less than memory, and memory prices are falling fast. data through JEMalloc allocator for distribution. Jemalloc is allowed to be assigned to diffe

Data Distribution in the Aerospike-Architecture SeriesData Distribution (Data Distribution) The Aerospike database isShared-NothingArchitecture: each node in an Aerospike cluster is the same. All nodes are equal and have no spof. Using the Aerospike smart partitioning algorithm, data is distributed across nodes in the

Distribution (distribution)The Aerospike database is a component of an application that runs for 24/7 and can reliably handle big data. When you develop an application, you don't have to worry about where the data resides. The client automatically discovers the data location and ensures that most of the request processing is single-hop. Applications can be thought of as databases stored on a separate server, and the cluster distribution probl

This is a creation in Article, where the information may have evolved or changed. Faced with hundreds of g of data, tens of thousands of of TPS has been looking for the right database and RPC framework. Recently, Aerospike and Google Grpc, Apache thrift were tested briefly.The content of the test is relatively simple, that is, the client looks for the key to the server and returns value. To test simplicity, there are only a couple of key_value in the

Secondary index managementThe Aerospike C client provides the ability to create and delete secondary indexes in the database.Currently, the secondary index can be created using a combination of namespace, set, and bin names, and the bin numeric type that can be used to create the index is an integer (integer) or string. If a secondary index is defined on a bin with an integer value, named "X", then only records containing bin "X" and bin value as Inte

Query recordsWhen you query In addition to using the primary index, the Aerospike C client also provides an API to query the database by retrieving the secondary index. In order to query data using a secondary index, a As_query object should be initialized and populated first, and then the query is executed using Aerospike_query_foreach () to initialize the completed As_query object. A query can: Call the callback function one by one on the r

1:aerospike Query LanguageSimilar to the SQL command. Can be used to manage indexes and user-defined functions, or to test the functionality of most databases. 1 2 3 4 5 6 7 8 9 10 11 12 13 [root@localhost ~] #aql options-h Data Management? 1 2 3 Aql> Show Namespaces aql> Show sets aql> show bins UDF Management Index Management? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Show INDEXES

Spring Boot is a powerful tool for spring QuickStart. Spring boot can help you easily build applications based on spring. Aerospike is a distributed and replicable memory database optimized for either DRAM or native flash/ssd,aerospike. Aerospike is highly reliable and follows acid. Developers can quickly extend a database cluster from two nodes to 20 nodes witho

1: The package that needs to be installed, if missing, please install. 1 2 3 Python (2.6+) gcc python-devel Install the appropriate module? 1 2 3 4 sudo pip install markupsafe sudo pip install paramiko sudo pip install ecdsa sudo pip install Pycrypto 　　 2: Download RPM package? 1 wget http://www.aerospike.com/artifacts/aerospike-amc-community/3.6.0/

Aerospike-Architecture series of big data typesLarge Data Types (Big Data Type) Big Data bin can store a Large number of object sets. The object type can be Integer/String/Map/List. A single record of Aerospike can contain many such bins. Such a bin allows a large amount of data to be contained in a separate record. The limit is based on the storage capability and there is no maximum value for the record.Th

Applying UDFs to recordsThe Aerospike C Client API provides aerospike_key_apply () to apply a user-defined function to a record in the database.before using the aerospike_key_apply () operation, the UDF module containing the function being applied must first be registered with the Aerospike server. See the section " registering user-defined Functions " to learn how to register using C API, or read the AQL H

Bulk Read RecordsIn addition to reading a single record each time, multiple records can be read from the cluster in one transaction. The associated client Aerospike C Client API calls are: aerospike_batch_get()-Returns all bin data required to record. aerospike_batch_exists()-Returns the required record metadata (time-to-live, generational number). The following code references the sample directory from the " Examples/basic_examples/

Select into and insert into select table copy statements Insert is a common statement in T-SQL. insert into table (field1, field2,...) values (value1, value2 ,...)ProgramDevelopment is indispensable. However, during the development and testing processes, we often encounter situations where table replication is required, such as copying some of the data fields of Table 1 to table 2 or copying the entire tab