In line with our version policy, we will remove access to the database and take a backup.We will no longer allow customers to provision new instances of Databases for MongoDB 3.4 В however, you will be able to restore your existing instance into a new version.This means that in January 2020, MongoDB is ending support for version 3.4. Took the ideas from Amazon's Dynamo 5.The End-of-Life (EOL) date for MongoDB 3.4 is approachingДЄs you may know, the End-of-Life (EOL) date for MongoDB 3.4 is approaching. Inspired by Dynamo whitepaper 4.1.5 dbcachedДЄ distributed key-value memory caching system for QDBM or Berkeley DB base on Memcached and NMDB 4.2 SQLз±» 4.2.1 Mycat Netflix open sources Dynomite to make any datastore distributedДЄ generic dynamo implementation for different k-v storage engines Innostore is a simple Erlang API to Embedded InnoDB 4 еЌ•жњєее‚Ёзљ„proxyй›†зѕ¤ж–№жЎ€ 4.1 KV/Redisз±» 4.1.1 Twenproxy LevelDB, goleveldb, LMDB, RocksDB, BoltDB or Memory (15E65)&version=11020201&pass_ticket=WU1aAnx4aVkuID0Quq0HGuKNQB68CvjQzaTnnIhjJFZwLcPqGk1zilYX4uRvF9sdДЄ high performance NoSQL like Redis powered by Go Redis-protocol compatible persistent nosql, it support multiple storage engines as backend like Google's LevelDB, Facebook's RocksDB, OpenLDAP's LMDB, WiredTiger, the default backend is Facebook's RocksDB. Thrudb is a set of simple services built on top of the Apache Thrift framework that provides indexing and document storage services 3.2 з»“жћ„еЊ–KVее‚Ё 3.2.1 Redis 3.2.2 ssdb Kyoto Tycoon is also a package of network interface to the DBM called Kyoto Cabinet. Kyoto Tycoon is a lightweight database server with auto expiration mechanism, which is useful to handle cache data and persistent data of various applications. Use qdbm, berkeley db, tokyo cabinet or tdb as database backendsДЄ distributed key-value storage system designed for persistent 1.9 documentз±» 1.9.1 RaptorDB document store Used by nmdbпјЊKyoto TreeDB 1.7.3 RaptorDB key value store (B+ ж ‘ ж€–иЂ… MurMur е“€еёЊзґўеј•) Tokyo Cabinet features on-disk B+ trees and hash tables for key-value storage Kyoto Cabinet is the designated successor of Tokyo Cabinet Tokyo Cabinet and Kyoto Cabinet are two libraries of routines for managing key-value databases. 1.7.2 Tokyo Cabinet and Kyoto Cabinet (B+tree,hash table) Ndbm stores arbitrary data by use of a single key in fixed-size buckets. Ndbm (standing for New Database Manager) is a Berkeley produced version from 1986 of the AT&T dbm database. Used by nmdb 1.6.2 ndbm (New Database Manager)

1.6 dbmзі»е€— 1.6.1 QDBM (Quick DataBase Manager) RocksDB Storage Engine Module for MongoDB The entire database is exposed in a memory map, and all data fetches return data directly from the mapped memory, so no malloc's or memcpy's occur during data fetches.Д«olt is a pure Go key/value store inspired by Howard Chu's LMDB project. LMDB is a Btree-based database management library modeled loosely on the BerkeleyDB API, but much simplified. 1.2.2 LMDB (Lightning Memory-Mapped Database)

The dbm library stores arbitrary data by use of a single key (a primary key) in fixed-size buckets and uses hashing techniques to enable fast retrieval of the data by key.

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