This demo is a simple in-memory distributed key-value database.
Note: The number of action invocations in OpenWhisk are limited to 60 per minute by default. The default limitations can be changed in helm configuration file when deploying it.
(The following steps are tested on Linux. Some steps might differ on other platforms.)
First, clone this repository directly to $GOPATH/src/github.com/DCsunset/openwhisk-grpc
or clone it elsewhere and create a symlink in it.
Next, modify the server.json in the server directory.
Since this prototype is elastic,
the initial field means the first server to store the data.
The availableServers field means the servers available to be used later.
The self field is the address of the current machine.
The servers field shows all the servers used for the db.
The threshold field means when the key-value pairs reach the threshold,
data should be split and sent to other available servers.
Then, start the db server in directory server on every machine:
go run *.go
Next, deploy OpenWhisk (for example, k8s in docker).
Finally, run createAction.sh in the demo directory to create some demo actions.
To invoke the action, change the parameters in invokeAction.sh and execute it.
protoc -I db --go_out=plugins=grpc:db db/db.proto
To run the benchmarking, first deploy the simple db and the distributed db.
Then modify the createAction.sh script and run it to create the benchmark action.
Finally, run the invokeAction.sh script to start the benchmarking.
(10ms delay has been added intentionally to read and write operations)
| Operations | Simple Database | Distributed Database |
|---|---|---|
| Read Latency | 25 ms | 20 ms |
| Write Latency | 50 ms | 35 ms |
| Read Throughput | 24 GB/s | 16 GB/s |
| Write Throughput | 7 GB/s | 11 GB/s |