Preface

ssdb It is a high-performance system that supports rich data structures NoSQL database , Used in substitution Redis.

It is associated with Redis One feature that has obvious advantages over is based on hard disk storage , Therefore, the amount of data it supports will not be constrained by memory constraints .

As for performance , Because the access efficiency depends in part on the size of the hard disk IOPS, therefore Official website Given benchmark The result should be very high IOPS The hard disk of ( Like solid state drives ) The results tested on , Someone has been tested in a normal environment , The actual efficiency is redis Of 42%~57%,CPU The load is twice as high , Concurrency efficiency is also related to redis There is a clear gap , Details can be referred to redis and ssdb Read performance comparison

although SSDB Not as efficient as REDIS, But disk based storage has its biggest advantage , After all, a lot of business data far exceeds the capacity of server memory , Even if not more than , Compared with hard disk , Memory is also much more expensive , Therefore, the choice between time and space depends on the specific application scenario

Let's share ssdb Basic operation , see Official documents

Tip: The current official version is SSDB 1.9.2

Summary

Download and install

Use the following method for installation

wget --no-check-certificate https://github.com/ideawu/ssdb/archive/master.zip
unzip master
cd ssdb-master
make
sudo make install

setup script

[[email protected] src]# wget --no-check-certificate https://github.com/ideawu/ssdb/archive/master.zip
--2015-11-24 19:36:34--  https://github.com/ideawu/ssdb/archive/master.zip
Resolving github.com... 192.30.252.130
Connecting to github.com|192.30.252.130|:443... connected.
HTTP request sent, awaiting response... 302 Found
Location: https://codeload.github.com/ideawu/ssdb/zip/master [following]
--2015-11-24 19:36:35--  https://codeload.github.com/ideawu/ssdb/zip/master
Resolving codeload.github.com... 192.30.252.147
Connecting to codeload.github.com|192.30.252.147|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: unspecified [application/zip]
Saving to: “master.zip”

    [                                                                                                     <=>

2015-11-24 19:37:19 (33.7 KB/s) - “master.zip” saved [1460288]

[[email protected] src]# ll master.zip 
-rw-r--r-- 1 root root 1460288 Nov 24 19:37 master.zip
[[email protected] src]# 
[[email protected] src]# unzip master.zip 
Archive:  master.zip
9497637f54da00f364e310de42000284545cfebe
   creating: ssdb-master/
  inflating: ssdb-master/.gitignore  
  inflating: ssdb-master/ChangeLog   
  inflating: ssdb-master/Dockerfile  
  inflating: ssdb-master/LICENSE     
  inflating: ssdb-master/Makefile    
  inflating: ssdb-master/README.md 
...
...
   creating: ssdb-master/tools/ssdb_cli/
  inflating: ssdb-master/tools/ssdb_cli/cluster.cpy  
  inflating: ssdb-master/tools/ssdb_cli/exporter.cpy  
  inflating: ssdb-master/tools/ssdb_cli/flushdb.cpy  
  inflating: ssdb-master/tools/ssdb_cli/importer.cpy  
  inflating: ssdb-master/tools/ssdb_cli/util.cpy  
  inflating: ssdb-master/tools/unittest.php  
 extracting: ssdb-master/version     
[[email protected] src]# 
[[email protected] src]# ll ssdb-master/
total 4912
drwxr-xr-x 6 root root    4096 Nov 23 20:34 api
-rw-r--r-- 1 root root     671 Nov 24 19:41 build_config.mk
-rwxr-xr-x 1 root root    3468 Nov 23 20:34 build.sh
-rw-r--r-- 1 root root    4831 Nov 23 20:34 ChangeLog
drwxr-xr-x 6 root root    4096 Nov 23 20:34 deps
-rw-r--r-- 1 root root     971 Nov 23 20:34 Dockerfile
drwxr-xr-x 2 root root    4096 Nov 23 20:34 docs
-rw-r--r-- 1 root root    1470 Nov 23 20:34 LICENSE
-rw-r--r-- 1 root root    1573 Nov 23 20:34 Makefile
-rw-r--r-- 1 root root    4412 Nov 23 20:34 README.md
drwxr-xr-x 6 root root    4096 Nov 24 19:41 src
-rwxr-xr-x 1 root root     946 Nov 23 20:34 ssdb.conf
-rwxr-xr-x 1 root root 4950089 Nov 24 19:40 ssdb-server
-rwxr-xr-x 1 root root     705 Nov 23 20:34 ssdb_slave.conf
drwxr-xr-x 3 root root    4096 Nov 24 19:40 tools
drwxr-xr-x 2 root root    4096 Nov 24 19:40 var
drwxr-xr-x 2 root root    4096 Nov 24 19:40 var_slave
-rw-r--r-- 1 root root       6 Nov 23 20:34 version
[[email protected] src]# 
[[email protected] src]# cd ssdb-master/
[[email protected] ssdb-master]# make 

##### building snappy... #####
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... /bin/mkdir -p
checking for gawk... gawk
...
...
g++ -o ssdb-repair ssdb-repair.o ../src/net/link.o ../src/net/fde.o ../src/util/log.o ../src/util/bytes.o   --1.18/libleveldb.a" "/usr/local/src/ssdb-master/deps/snappy-1.1.0/.libs/libsnappy.a" "/usr/local/src/ssdb-mas
g++ -o leveldb-import leveldb-import.o ../src/net/link.o ../src/net/fde.o ../src/util/log.o ../src/util/byteseveldb-1.18/libleveldb.a" "/usr/local/src/ssdb-master/deps/snappy-1.1.0/.libs/libsnappy.a" "/usr/local/src/ss
g++ -o ssdb-migrate ssdb-migrate.o ../api/cpp/libssdb-client.a ../src/util/libutil.a
make[1]: Leaving directory `/usr/local/src/ssdb-master/tools'
[[email protected] ssdb-master]# echo $?
0
[[email protected] ssdb-master]# make install 
mkdir -p /usr/local/ssdb
mkdir -p /usr/local/ssdb/_cpy_
mkdir -p /usr/local/ssdb/deps
mkdir -p /usr/local/ssdb/var
mkdir -p /usr/local/ssdb/var_slave
cp -f ssdb-server ssdb.conf ssdb_slave.conf /usr/local/ssdb
cp -rf api /usr/local/ssdb
cp -rf \
		tools/ssdb-bench \
		tools/ssdb-cli tools/ssdb_cli \
		tools/ssdb-cli.cpy tools/ssdb-dump \
		tools/ssdb-repair \
		/usr/local/ssdb
cp -rf deps/cpy /usr/local/ssdb/deps
chmod 755 /usr/local/ssdb
chmod -R ugo+rw /usr/local/ssdb/*
rm -f /usr/local/ssdb/Makefile
[[email protected] ssdb-master]#