redis操作实战
一、基本存储结构
1.hash
127.0.0.1:6379> keys *ServiceConfig*
1) "NGMA_SYSTEM:com.polycom.rpum.core.dal.memi.NgmaServiceConfigMem:cbb6c789-ea35-4b05-b97e-aab8e6d5318d"
2) "com.polycom.rpum.core.dal.memi.NgmaServiceConfigMem.serviceTypeKey.NGMA_SYSTEM:com.polycom.rpum.core.dal.memi.NgmaServiceTypeMem:97b772b4-3031-4788-936a-127df9ee5a47"
3) "NGMA_SYSTEM:com.polycom.rpum.core.dal.memi.NgmaServiceConfigMem:8f18d57d-b0c9-4b5b-b503-8ed04b707b87"
4) "com.polycom.rpum.core.dal.memi.NgmaServiceConfigMem.serviceTypeKey.NGMA_SYSTEM:com.polycom.rpum.core.dal.memi.NgmaServiceTypeMem:f047c363-189f-4921-922b-73aa40a194d1"
5) "NGMA_SYSTEM:com.polycom.rpum.core.dal.memi.NgmaServiceConfigMem:All"列出测试对象，以serviceconfig为例，首先查看对象类型：
127.0.0.1:6379> type NGMA_SYSTEM:com.polycom.rpum.core.dal.memi.NgmaServiceConfigMem:cbb6c789-ea35-4b05-b97e-aab8e6d5318d
hash利用hash来存储对象，查询所有hash所有字段：
127.0.0.1:6379> hgetall NGMA_SYSTEM:com.polycom.rpum.core.dal.memi.NgmaServiceConfigMem:cbb6c789-ea35-4b05-b97e-aab8e6d5318d
1) "serviceDefinedTransportListKey"
2) "\"NGMA_SYSTEM:cbb6c789-ea35-4b05-b97e-aab8e6d5318d:serviceDefinedTransport\""
3) "nameSpace"
4) "{\"productName\":\"NGMA_SYSTEM\"}"
5) "serviceTypeKey"
6) "\"NGMA_SYSTEM:com.polycom.rpum.core.dal.memi.NgmaServiceTypeMem:f047c363-189f-4921-922b-73aa40a194d1\""
7) "extendedAttr"
8) "{}"
9) "key"
10) "\"NGMA_SYSTEM:com.polycom.rpum.core.dal.memi.NgmaServiceConfigMem:cbb6c789-ea35-4b05-b97e-aab8e6d5318d\""
11) "uuid"
12) "\"cbb6c789-ea35-4b05-b97e-aab8e6d5318d\""
13) "keyAll"
14) "\"NGMA_SYSTEM:com.polycom.rpum.core.dal.memi.NgmaServiceConfigMem:All\""
15) "serviceNodeKey"
16) "\"NGMA_SYSTEM:com.polycom.rpum.core.shared.dataobject.NgmaServiceNode:763b79fa-8e5d-47e8-8dd3-73354a6be977\""
17) "serviceName"
18) "\"pd-rpp-tomcat-default\""如果查看单个字段，如下命令：
hget hashname fieldname
127.0.0.1:6379> hget NGMA_SYSTEM:com.polycom.rpum.core.dal.memi.NgmaServiceConfigMem:cbb6c789-ea35-4b05-b97e-aab8e6d5318d serviceDefinedTransportListKey
"\"NGMA_SYSTEM:cbb6c789-ea35-4b05-b97e-aab8e6d5318d:serviceDefinedTransport\""基本对象容易，下面看看如果是对象如何处理？？ 存储的是对应对象的key，利用key去查询，type transport等
下面以service type为例，必然也是hash存储形式，如下查看
127.0.0.1:6379> type NGMA_SYSTEM:com.polycom.rpum.core.dal.memi.NgmaServiceTypeMem:f047c363-189f-4921-922b-73aa40a194d1
hash127.0.0.1:6379> hgetall NGMA_SYSTEM:com.polycom.rpum.core.dal.memi.NgmaServiceTypeMem:f047c363-189f-4921-922b-73aa40a194d1
1) "startTimeout"
2) "60"
3) "serviceTypeFlag"
4) "\"BUSINESS\""
5) "keyAll"
6) "\"NGMA_SYSTEM:com.polycom.rpum.core.dal.memi.NgmaServiceTypeMem:All\""
7) "serviceTypeName"
8) "\"pd-rpp-tomcat\""
9) "dependencyUuidStringListKey"
10) "\"NGMA_SYSTEM:f047c363-189f-4921-922b-73aa40a194d1:dependencyList\""
11) "uuid"
12) "\"f047c363-189f-4921-922b-73aa40a194d1\""
13) "key"
14) "\"NGMA_SYSTEM:com.polycom.rpum.core.dal.memi.NgmaServiceTypeMem:f047c363-189f-4921-922b-73aa40a194d1\""
15) "loadOnStartup"
16) "true"
17) "defaultTransportListKey"
18) "\"NGMA_SYSTEM:f047c363-189f-4921-922b-73aa40a194d1:defaultTransport\""
19) "stopCommandTemplate"
20) "\"/opt/polycom/rpum/current/bin/test/demo-stop-platform-directory.sh\""
21) "reportStatus"
22) "true"
23) "startupCommandTemplate"
24) "\"/opt/polycom/rpum/current/bin/test/demo-launch-platform-directory.sh\""
25) "stopTimeout"
26) "60"
27) "nameSpace"
28) "{\"productName\":\"NGMA_SYSTEM\"}"
29) "extendedAttr"
30) "{\"restartIfNoStatusReport\":\"false\",\"defaultInstanceID\":\"cbb6c789-ea35-4b05-b97e-aab8e6d5318d\",\"mlaxRestartCount\":\"3\",\"managedService\":\"true\"}"
31) "restart"
32) "false"
33) "permissionListKey"
34) "\"NGMA_SYSTEM:f047c363-189f-4921-922b-73aa40a194d1:permission\""
127.0.0.1:6379> hset 001 name "kerry"
(integer) 1
127.0.0.1:6379> hget 001
(error) ERR wrong number of arguments for 'hget' command
127.0.0.1:6379> hget 001:name
(error) ERR wrong number of arguments for 'hget' command
127.0.0.1:6379> hget 001 name
"kerry"
(integer) 1
127.0.0.1:6379> hget 001
(error) ERR wrong number of arguments for 'hget' command
127.0.0.1:6379> hget 001:name
(error) ERR wrong number of arguments for 'hget' command
127.0.0.1:6379> hget 001 name
"kerry"
127.0.0.1:6379> hmset user:001 name "kerry" age 18 birthday "20010101"
OK
127.0.0.1:6379> hget user:001 name
"kerry"
127.0.0.1:6379> hget user:001 age
"18"
127.0.0.1:6379> hget user:001 birthday
"20010101"
127.0.0.1:6379> hgetall user:001
1) "name"
2) "kerry"
3) "age"
4) "18"
5) "birthday"
6) "20010101"
OK
127.0.0.1:6379> hget user:001 name
"kerry"
127.0.0.1:6379> hget user:001 age
"18"
127.0.0.1:6379> hget user:001 birthday
"20010101"
127.0.0.1:6379> hgetall user:001
1) "name"
2) "kerry"
3) "age"
4) "18"
5) "birthday"
6) "20010101"
2. list
127.0.0.1:6379> lrange NGMA_SYSTEM:cbb6c789-ea35-4b05-b97e-aab8e6d5318d:serviceDefinedTransport 0 100
1) "NGMA_SYSTEM:com.polycom.rpum.core.shared.dataobject.NgmaTransport:5d886988-6a72-424a-92d3-df45876442b5"
2) "NGMA_SYSTEM:com.polycom.rpum.core.shared.dataobject.NgmaTransport:ac39935b-f4fa-4341-9d1c-dfa9a8806526"3. string
get set
4. set
127.0.0.1:6379> type NGMA_SYSTEM:com.polycom.rpum.core.dal.memi.NgmaServiceConfigMem:All
set
127.0.0.1:6379> hgetall NGMA_SYSTEM:com.polycom.rpum.core.dal.memi.NgmaServiceConfigMem:All
(error) WRONGTYPE Operation against a key holding the wrong kind of value
127.0.0.1:6379> smembers NGMA_SYSTEM:com.polycom.rpum.core.dal.memi.NgmaServiceConfigMem:All
1) "NGMA_SYSTEM:com.polycom.rpum.core.dal.memi.NgmaServiceConfigMem:8f18d57d-b0c9-4b5b-b503-8ed04b707b87"
2) "NGMA_SYSTEM:com.polycom.rpum.core.dal.memi.NgmaServiceConfigMem:cbb6c789-ea35-4b05-b97e-aab8e6d5318d"5 Sort Set
not found in our project
127.0.0.1:6379> zadd a
(error) ERR wrong number of arguments for 'zadd' command
127.0.0.1:6379> zadd a ab
(error) ERR wrong number of arguments for 'zadd' command
127.0.0.1:6379> zadd student kerry 100
(error) ERR value is not a valid float
127.0.0.1:6379> zadd student 100 kerry
(integer) 1
127.0.0.1:6379> zadd student 80 addsion
(integer) 1
127.0.0.1:6379> zrange 0 -1
(error) ERR wrong number of arguments for 'zrange' command
127.0.0.1:6379> zrange student 0 -1
1) "addsion"
2) "kerry"
127.0.0.1:6379> zrange student 0 -1 withscores
1) "addsion"
2) "80"
3) "kerry"
4) "100"
(error) ERR wrong number of arguments for 'zadd' command
127.0.0.1:6379> zadd a ab
(error) ERR wrong number of arguments for 'zadd' command
127.0.0.1:6379> zadd student kerry 100
(error) ERR value is not a valid float
127.0.0.1:6379> zadd student 100 kerry
(integer) 1
127.0.0.1:6379> zadd student 80 addsion
(integer) 1
127.0.0.1:6379> zrange 0 -1
(error) ERR wrong number of arguments for 'zrange' command
127.0.0.1:6379> zrange student 0 -1
1) "addsion"
2) "kerry"
127.0.0.1:6379> zrange student 0 -1 withscores
1) "addsion"
2) "80"
3) "kerry"
4) "100"
二、使用分析
2.1 Get All 操作，以service config为例
应用层调用---------->DAL-------------->redis layer
List serviceConfigList = servicedata.getAllServiceConfigs();
public List getAllServiceConfigs()
throws PlcmStatusException
{
final List serviceConfigList = new ArrayList<>();
logTime(() -> {
serviceConfigList.addAll(serviceDataMemDao.getAllServiceConfigs());
return "serviceDataMemDao.getAllServiceConfigs()";
});
if (serviceConfigList.size() == 0)
{
loadServiceConfigToMem();
logTime(() -> {
serviceConfigList.addAll(serviceDataMemDao.getAllServiceConfigs());
return "serviceDataMemDao.getAllServiceConfigs()";
});
}
return serviceConfigList;
} @Override
public List getAllServiceConfigs()
throws PlcmStatusException
{
List serviceConfigList = new ArrayList<>();
NgmaServiceConfigMem mem = new NgmaServiceConfigMem();
Set serviceConfigKeys = memoryService.memorySmembers(mem.getKeyAll());
if (!serviceConfigKeys.isEmpty())
{
Iterator iter = serviceConfigKeys.iterator();
while (iter.hasNext())
{ public void saveServiceConfig(NgmaServiceConfig serviceConfig)
throws PlcmStatusException
{
// save transport list
NgmaServiceConfigMem mem = (NgmaServiceConfigMem) ConvertUtils.convert(serviceConfig,
NgmaServiceConfigMem.class);
String lockKey = mem.getKey() + ":Lock";
BlockableLock lock = new BlockableLock(memoryService, lockKey);
try
{
lock.lock();
saveServiceConfigInLocked(serviceConfig, mem);
}
finally
{
lock.unlock();
}
} String key = iter.next();
try
{
serviceConfigList.add(getServiceConfigByRedisKey(key));
}
catch (Exception e)
{
throw new PlcmStatusException("restore all service config error!", RpumExceptionStatus.EXCEPTION, e);
}
}
}
return serviceConfigList;
}
2.2 Save service config
public void saveServiceConfig(NgmaServiceConfig serviceConfig)
throws PlcmStatusException
{
// save transport list
NgmaServiceConfigMem mem = (NgmaServiceConfigMem) ConvertUtils.convert(serviceConfig,
NgmaServiceConfigMem.class);
String lockKey = mem.getKey() + ":Lock";
BlockableLock lock = new BlockableLock(memoryService, lockKey);
try
{
lock.lock();
saveServiceConfigInLocked(serviceConfig, mem);
}
finally
{
lock.unlock();
}
} static
{
ConvertUtils.register(new NgmaServiceConfig2MemConverter(), NgmaServiceConfigMem.class);
ConvertUtils.register(new NgmaServiceConfigFromMemConverter(), NgmaServiceConfig.class);
ConvertUtils.register(new NgmaServiceType2MemConverter(), NgmaServiceTypeMem.class);
ConvertUtils.register(new NgmaServiceTypeFromMemConverter(), NgmaServiceType.class);
}
private static class NgmaServiceConfig2MemConverter implements Converter
{
@Override
public
{
if (type.equals(NgmaServiceConfigMem.class) && value != null
&& value.getClass().equals(NgmaServiceConfig.class))
{
NgmaServiceConfig config = (NgmaServiceConfig) value;
NgmaServiceConfigMem mem = new NgmaServiceConfigMem();
mem.setExtendedAttr(config.getExtendedAttr());
mem.setServiceDefinedTransportListKey(createTransportListKey(config.getUuid()));
mem.setServiceDefinedTransport(config.getServiceDefinedTransport());
mem.setServiceName(config.getServiceName());
mem.setServiceNodeKey(config.getServiceNode().getKey());
NgmaServiceTypeMem serviceTypeMem = (NgmaServiceTypeMem) ConvertUtils.convert(
config.getServiceType(), NgmaServiceTypeMem.class);
mem.setServiceTypeKey(serviceTypeMem.getKey());
mem.setUuid(config.getUuid());
return (T) mem;
}
return null;
}
}