flashdb Cli
1. Introduction to Flashdb
FlashDB is an ultra-lightweight embedded database that focuses on providing data storage solutions for embedded products. Different from traditional database based on file system, FlashDB combines the features of Flash and has strong performance and reliability. And under the premise of ensuring extremely low resource occupation, the service life of Flash should be extended as much as possible.
- FlashDB provides two database modes:
Key-value database: It is a non-relational database that stores data as a collection of key-value pairs, where the key is used as a unique identifier. KVDB has simple operation and strong scalability.
Time Series Database: Time Series Database (TSDB), which stores data in time sequence. TSDB data has a timestamp, a large amount of data storage, and high insertion and query performance.
Api: https://armink.github.io/FlashDB/#/api
Introduction to demo: http://armink.gitee.io/flashdb/#/demo-details
Get more information: https://armink.gitee.io/flashdb/#/README
Important
The kvdb of FlashDB is equal easyflash, so if you use FlashDB, we suggest close easyflash.
2. path
path:
\components\bk_cli\cli_flashdb.c
3. Dependency configuration
CONFIG
value
CONFIG_FLASHDB
y, switch of flashdb
CONFIG_FLASHDB_USING_KVDB
y, switch of kvdb
CONFIG_FLASHDB_KVDB_START_ADDR
0x3EF000, the start addr in flash of kvdb, you can change
CONFIG_FLASHDB_KVDB_SIZE
0x2000, the size in flash of kvdb, you can change
CONFIG_NTP_SYNC_RTC
y, switch of ntp, in order to give time to tsdb
CONFIG_FLASHDB_USING_TSDB
y, switch of tsdb
CONFIG_FLASHDB_TSDB_START_ADDR
0x3F1000, the start addr in flash of tsdb, you can change
CONFIG_FLASHDB_TSDB_SIZE
0x4000, the size in flash of kvdb, you can change
CONFIG_FLASHDB_DEMO
y, switch of flashdb test demo
4. Introduction to the cli command
The supported commands are as follows:
- 1.flashdb_init
Function description Initialize kvdb and tsdb in flashdb.
- 2.flashdb_kvdb
Function description This example mainly demonstrates the basic functions of kvdb, including write and read of blob and string types, and traversal of kvdb. Please refer to: http://armink.gitee.io/flashdb/#/zh-cn/sample-kvdb-basic
- 3.flashdb_tsdb
Function description This example mainly demonstrates the basic functions of TSDB, including the addition, query, and status modification functions of TSL (time series record). Please refer to: http://armink.gitee.io/flashdb/#/zh-cn/sample-tsdb-basic