bitbucket.org/innius/sensor-read-model

sensor-read-model

Golang library for innius sensor read model

usage

bitbucket.org/innius/sensor-read-model

store := readmodel.NewRedisStore("localhost:6379")

Decisions

• use optimistic locking while updating redis; see https://redis.io/topics/transactions#cas
• performance tests for different redis storage options (keys vs sorted sets) are skipped for now

dependencies

This module is refered to from at least the projects listed below. It is wise to update these components on each realease of this sensor-read-model

• continuous-aggr-regen-batch
• timeseries-query-api
• continuous-sensor-aggregate-net-change
• aggregation-trigger

Protobuf

The read model applies Google’s Protocol Buffers to shrink the data amount stored in redis. Data payload definitions are specified in .proto files, these are the protocol buffer definitions. Compling the buffer definitions to go code is a manual step, it’s not included in the build process. When the .proto files are extended, the programmer needs to install the protoc and protoc-gen-go and run the generator against the definitions. The resulting generated .pb.go need to be added to the version control system. See https://github.com/golang/protobuf