since redis Joined the module After the function ,redis The ecology is interesting , The big boys in every field will give it in the form of plug-ins redis Extend some new functionality , Like this one rediSQL,rebloom.

One :rediSQL

1. background

redis It's awesome , But there were plenty of jokes redis Too weak operability , Let's say you want to be in redis The implementation of a more complex business logic , It could be a disaster for you , Some students can speak English redis Of

stored procedure lua scatter , however lua Not every programmer can , Not to mention the data analysts , But if you ask sql Will the , Basically qualified programmers and analysts are fine with this , If you really let sql

Fall in the redis On , That's like a tiger with wings , Possibly the earliest sql Fall on redis Upper , Should be spark sql Well , Give Way redis As spark Of rdd, But here we're talking about another pass module Realized sql on redis.

2. download

The source code can go to github:  , Download address is :

Download the compiled file directly , Just use it .

3. load

This simple , The first Import to centos in , And then just use module load return ok that will do .

1 [[email protected] redis]# ls
2 00-RELEASENOTES COPYING Makefile redis.conf runtest src
3 appendonly.aof deps MANIFESTO redis-check-aof runtest-cluster tests
4 BUGS dump.rdb module redis-check-rdb redis-server runtest-sentinel utils
5 CONTRIBUTING INSTALL mydata redis-cli redis-trib.rb sentinel.conf
[[email protected] redis]# ./redis-cli> module load /data/redis/

4. Easy to use

If want to let sql Fall on redis in , That has to build a library to build a table first , here database:Datamip, table:customer, Then I did a simple query , as follows :> REDISQL.CREATE_DB Datamip
OK> REDISQL.EXEC Datamip "CREATE TABLE customer(id int, username varchar(10));"
2) (integer) 0> REDISQL.EXEC Datamip "INSERT INTO customer VALUES(1, 'jack');"
2) (integer) 1> REDISQL.EXEC Datamip "INSERT INTO customer VALUES(2, 'mary');"
2) (integer) 1> REDISQL.EXEC Datamip "SELECT * FROM customer WHERE id=2"
1) 1) (integer) 2
2) "mary">

Isn't it a great feeling , But the author has to eat , So the enterprise version or to collect money at the bottom of the box .

Two : rebloom

1. background

This module And it's interesting , It gives redis Two filters have been added , A place called bloom filter, A place called cuckoo filter, bloomfilter You probably know that , With a minimal error rate

The original HashSet Of 1/8 -1/4 Space utilization of , Let's see what happens ,cuckoofilter Which translates to cuckoo filter , Maybe the author's family raised birds , How else could there be so many birds ,

You just have to understand cuckoofilter Than bloomfilter More save a space , Lower error rate , And still support delete .

You can look at the paper specifically : .

2. download

github Address :    And then find release Pattern , After downloading the need for their own make once .

[[email protected] module]# ls
[[email protected] module]# tar -xzvf v1.1.0.tar.gz
[[email protected] module]# ls
rebloom-1.1.0 v1.1.0.tar.gz
[[email protected] module]# cd rebloom-1.1.0
[[email protected] rebloom-1.1.0]# ls
contrib Dockerfile docs LICENSE Makefile mkdocs.yml ramp.yml src tests
[[email protected] rebloom-1.1.0]# make
cc -Wall -Wno-unused-function -g -ggdb -O2 -fPIC -std=gnu99 -D_GNU_SOURCE -I/data/redis/module/rebloom-1.1.0 -I/data/redis/module/rebloom-1.1.0/contrib -c -o /data/redis/module/rebloom-1.1.0/src/rebloom.o /data/redis/module/rebloom-1.1.0/src/rebloom.c
cc -Wall -Wno-unused-function -g -ggdb -O2 -fPIC -std=gnu99 -D_GNU_SOURCE -I/data/redis/module/rebloom-1.1.0 -I/data/redis/module/rebloom-1.1.0/contrib -c -o /data/redis/module/rebloom-1.1.0/contrib/MurmurHash2.o /data/redis/module/rebloom-1.1.0/contrib/MurmurHash2.c
cc -Wall -Wno-unused-function -g -ggdb -O2 -fPIC -std=gnu99 -D_GNU_SOURCE -I/data/redis/module/rebloom-1.1.0 -I/data/redis/module/rebloom-1.1.0/contrib -c -o /data/redis/module/rebloom-1.1.0/src/sb.o /data/redis/module/rebloom-1.1.0/src/sb.c
cc -Wall -Wno-unused-function -g -ggdb -O2 -fPIC -std=gnu99 -D_GNU_SOURCE -I/data/redis/module/rebloom-1.1.0 -I/data/redis/module/rebloom-1.1.0/contrib -c -o /data/redis/module/rebloom-1.1.0/src/cf.o /data/redis/module/rebloom-1.1.0/src/cf.c
In file included from /data/redis/module/rebloom-1.1.0/src/cf.c:6:0:
/data/redis/module/rebloom-1.1.0/src/cuckoo.c: In function ‘CuckooFilter_Count’:
/data/redis/module/rebloom-1.1.0/src/cuckoo.c:157:9: warning: passing argument 1 of ‘filterCount’ from incompatible pointer type [enabled by default]
ret += filterCount(filter->filters[ii], &params);
/data/redis/module/rebloom-1.1.0/src/cuckoo.c:139:15: note: expected ‘const uint8_t (*)[2]’ but argument is of type ‘uint8_t (*)[2]’
static size_t filterCount(const CuckooBucket *filter, const LookupParams *params) {
ld /data/redis/module/rebloom-1.1.0/src/rebloom.o /data/redis/module/rebloom-1.1.0/contrib/MurmurHash2.o /data/redis/module/rebloom-1.1.0/src/sb.o /data/redis/module/rebloom-1.1.0/src/cf.o -o /data/redis/module/rebloom-1.1.0/ -shared -Bsymbolic -Bsymbolic-functions -lm -lc
[[email protected] rebloom-1.1.0]# ls
contrib Dockerfile docs LICENSE Makefile mkdocs.yml ramp.yml src tests

The last one in red That's the load file you're ultimately looking for .

[[email protected] redis]# ./redis-cli> module load /data/redis/module/rebloom-1.1.0/

3.   Easy to use

《1》 bloomfilter Simple use , Such as into 1,2,3,4 . Judge 3,5 Whether or not , as follows :> bf.add myfilter 1
(integer) 1> bf.add myfilter 2
(integer) 1> bf.add myfilter 3
(integer) 1> bf.add myfilter 4
(integer) 1> bf.exists myfilter 3
(integer) 1> bf.exists myfilter 5
(integer) 0>

《2》 stay github Of quickstart I didn't find it cuckoofilter How to use , It doesn't matter" , Just look for the source file .

For example, the following source code is to tell you how to use .

And then we can do something simple add,delete,exists La .> cf.add myfilter2 1
(integer) 1> cf.add myfilter2 2
(integer) 1> cf.add myfilter2 3
(integer) 1> cf.add myfilter2 4
(integer) 1> cf.del myfilter 2
(error) Not found> cf.del myfilter2 2
(integer) 1> cf.exists myfilter2 1
(integer) 1

Okay , So that's what this is about module, It's kind of interesting .

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