- Written in Linux C.
- TSDB is a key-value, time series database.
- Storage engine uses levelDB.
- Supports snappy compression.
- Redis clients are supported, some commands just are supported, see details below.
get key: Get the value of a key.set key value: Set the value of the key.del key: Delete the key.mset key1 value1 [key2 value2 ...]: Set multiple keys to multiple values.lrange prefix_key ts1 ts2: Get a range of key-values.keys string: Find all keys prefix matching the given pattern.info: Get information and statistics about the server.ping: Test client connection.exists key: Determine whether key exists.
- Make the dependented libraries:
make libs - Make the TSDB:
make all - Then make OK.
- Modify the configuration file in
config.json, the defaults as following:
"work_path": "./var"
"log_path": "./var/logs"
"log_file": "access"
- Must ensure the directories exist, if not exist, then:
mkdir ./var
mkdir ./var/logs
- Startup the TSDB server:
./tsdb_start.sh
- Start OK.
- The file is json format. Below is a description of each item.
w_port: integer, write port.
r_port: integer, read port.
max_connect: integer, maximum number of connections.
num_threads: integer, the number of processing threads.
work_path: string, workspace directory, data files storage directory.
log_path: string, logging directory.
log_file: string, log file name.
log_level: integer, log level, the details see below.
ldb_readonly_switch: integer, read only switch.
ldb_write_buffer_size: integer, write buffer size in bytes.
ldb_block_size: integer, block size in bytes.
ldb_cache_lru_size: integer, lru cache size in bytes.
ldb_bloom_key_size: integer, number of bloomkeys.
- Log level(log_level)
0: LEVEL_FATAL
1: LEVEL_ERROR
2: LEVEL_WARN
3: LEVEL_INFO
4: LEVEL_DEBUG
5: LEVEL_TRACE
- Description the directories.
.
|-- docs --> documents
|-- deps --> dependented libraries
|-- obj --> object binary files
|-- src --> source code
|-- test --> test code
`-- var --> default workspace
- Lua
require 'redis'
local conn = Redis.connect('127.0.0.1', 7501)
conn:set('usr:rk', 10)
conn:set('usr:nobody', 5)
local value = conn:get('usr:rk') -- 10
print(value)
- Modified the levelDB source code( you can research the string chenjianfei@daoke.me in levelDB directory).
deps/leveldb-1.15.0/build_detect_platform
deps/leveldb-1.15.0/db/dbformat.h
deps/leveldb-1.15.0/db/version_set.cc
- See the LICENSE file.
- TODO