由于我是 Redis 的新手，我需要一些关于如何在 REDIS 中存储以下复杂 json 的指导，以便我们可以从 REDIS 访问 JSON 的元素 -
"Reservations": [
{
"Instances": [
{
"Monitoring": {
"State": "disabled"
},
"PublicDnsName": "",
"State": {
"Code": 16,
"Name": "running"
},
"EbsOptimized": "false",
"LaunchTime": "xxxxxxxxx",
"PrivateIpAddress": "x.x.x.x",
"ProductCodes": [],
"VpcId": "xxxxx",
"StateTransitionReason": "",
"InstanceId": "i-xxxxxxx",
"EnaSupport": "true",
"ImageId": "ami-xxxxx",
"PrivateDnsName": "ip-xxxxxx.ec2.internal",
"KeyName": "xxxxxxv",
"SecurityGroups": [
{
"GroupName": "xxx",
"GroupId": "sg-xxxx"
},
{
"GroupName": "xxxxxx",
"GroupId": "sg-xxxxx"
},
{
"GroupName": "xxxxx",
"GroupId": "sg-xxxxxx"
},
{
"GroupName": "xxxxx",
"GroupId": "sg-xxxxxx"
}
],
"ClientToken": "xxxxx",
"SubnetId": "subnet-xxxxx",
"InstanceType": "t2.micro",
"NetworkInterfaces": [
{
"Status": "in-use",
"MacAddress": "xxxxxxxx",
"SourceDestCheck": "true",
"VpcId": "vpc-xxxxx",
"Description": "",
"NetworkInterfaceId": "eni-xxxxx",
"PrivateIpAddresses": [
{
"PrivateDnsName": "ip-xx-ec2.internal",
"Primary": "true",
"PrivateIpAddress": "xxxxx"
}
],
"PrivateDnsName": "ip-xxxx-xx.ec2.internal",
"Attachment": {
"Status": "attached",
"DeviceIndex": 0,
"DeleteOnTermination": "true",
"AttachmentId": "eni-attach-xxxxx",
"AttachTime": "2017-0xxxxx"
},
"Groups": [
{
"GroupName": "xx",
"GroupId": "sg-xxxx"
},
{
"GroupName": "xxxx",
"GroupId": "sg-xxx"
},
{
"GroupName": "xxxx",
"GroupId": "sg-xxx"
},
{
"GroupName": "xxxx",
"GroupId": "sg-xxxx"
}
],
"Ipv6Addresses": [],
"OwnerId": "xxx",
"SubnetId": "subnet-xxxx",
"PrivateIpAddress": "1xxxx"
}
],
"SourceDestCheck": "true",
"Placement": {
"Tenancy": "default",
"GroupName": "",
"AvailabilityZone": "us-xxxxxxx"
},
"Hypervisor": "xen",
"BlockDeviceMappings": [
{
"DeviceName": "/dev/xxxxxx",
"Ebs": {
"Status": "attached",
"DeleteOnTermination": "true",
"VolumeId": "vol-xxxxxx",
"AttachTime": "2017-xxxxxxx"
}
}
],
"Architecture": "x86_64",
"RootDeviceType": "ebs",
"IamInstanceProfile": {
"Id": "xxxxxxxx",
"Arn": "arn:aws:iam::xxxxxxx"
},
"RootDeviceName": "/dev/xxxxx",
"VirtualizationType": "hvm",
"Tags": [
{
"Value": "xxxxxx",
"Key": "aws:cloudformation:stack-name"
},
{
"Value": "xxxxxxx",
"Key": "aws:cloudformation:logical-id"
},
{
"Value": "arn:aws:cloudformation:xxxxxx",
"Key": "aws:cloudformation:stack-id"
}
],
"AmiLaunchIndex": 0
}
],
"ReservationId": "r-xxxxx",
"RequesterId": "xxxxx",
"Groups": [],
"OwnerId": "xxxxxx"
}
]
}
我需要以查询 IP/主机名/InstanceID 的方式存储它，以获取 JSON 中存在的所有元素。
我需要一些关于上述内容的指导。
最佳答案
您不能直接执行此操作，但幸运的是，有一个名为 RedisJSON 的新 Redis 模块可以完全满足您的需要，并且它还有一个很好的 Python 绑定(bind)。您可以启动 RedisJSON docker container或使用 Redis 4.0+，然后 download/compile and install RedisJSON 并配置 Redis 以加载它，并添加用于 JSON 操作的 native 命令。
它允许您将 JSON 文档存储在 Redis 中，然后获取或修改文档树中的特定元素，而无需检索(或在内部甚至解析)文档。它的 Python 客户端甚至可以让您存储 Python 字典并自动将它们转换为 JSON。
ReJSON 模块:http://redisjon.io
Python 客户端:https://pypi.python.org/pypi/rejson
例子:
from rejson import Client, Path
rj = Client(host='localhost', port=6379)
# Set the key `obj` to some object
obj = {
'answer': 42,
'arr': [None, True, 3.14],
'truth': {
'coord': 'out there'
}
}
rj.jsonset('obj', Path.rootPath(), obj)
# Get something
print 'Is there anybody... {}?'.format(
rj.jsonget('obj', Path('.truth.coord'))
)
关于python - 如何使用 Python 在 Redis 中存储复杂的嵌套 JSON，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/47078447/