Try foundation db
This how-to is supposed for learning and was written for developers who wants to try the FoundationDB.
FoundationDB is a distributed database designed to handle large volumes of structured data across clusters of commodity servers. It organizes data as an ordered key-value store and employs ACID transactions for all operations. It is especially well-suited for read/write workloads but also has excellent performance for write-intensive workloads.
You can find the source code for this article here.
I assume you have got hand-on experience with
Docker, also you’re comfortable with bash shell.
I'll use some piece of
golang but you might use another api language bindings.
You may ask why I use Docker, I found Docker containers are very handy in order to try something new and share the experience. Also it keeps my host machine clean from the stuff I dont need everyday.
In order to allow containers talk to each other we will use
Docker network feature.
Create a network:
$> docker network create fdbnetwork
Here is the
Dockerfile for server image:
FROM ubuntu:16.04 RUN apt-get update && apt-get install --fix-missing --yes wget vim python RUN wget https://www.foundationdb.org/downloads/6.0.15/ubuntu/installers/foundationdb-clients_6.0.15-1_amd64.deb RUN dpkg -i foundationdb-clients_6.0.15-1_amd64.deb RUN wget https://www.foundationdb.org/downloads/6.0.15/ubuntu/installers/foundationdb-server_6.0.15-1_amd64.deb COPY start.sh .
There is a shell script
start.sh, that script contains a bunch of commands to edit configuration for
Now lets build
FoundationDB server image:
$> docker build -t fdb . -f FDB.Dockerfile # ... output omited
Next step is start the
FoundationDB server container and add public ip address of container to
# log into container $> docker run -it --rm -v $(pwd)/conf:/etc/foundationdb -p 4500:4500 --network fdbnetwork fdb shell # show public ip address of container $> getent hosts 127.0.0.1 localhost 127.0.0.1 localhost ip6-localhost ip6-loopback 172.17.0.2 fd4051d44517 # in my case it's 172.17.0.2 # open start.sh with vim editor # and set ip address $> vim start.sh # ... # set FDB_PUBLIC_ADDR variable to ip address we've above # run start.sh script $> ./start.sh # you may see # ... >>> configure new single memory Database created >>> status Using cluster file /etc/foundationdb/fdb.cluster. # ... # output omited fdb>
FoundationDB server container is up and running, the public ip for client containers is exposed.
Now it is time to run
FoundationDB client container. As you see early we've run server container with option
this option creates a docker volume so client container is able to copy
foundationdb.conf file at the build step.
Here is the
Dockerfile for client image:
FROM ubuntu:16.04 RUN apt-get update && apt-get install --fix-missing --yes wget golang python git mono-complete make default-jre m4 RUN wget https://www.foundationdb.org/downloads/6.0.15/ubuntu/installers/foundationdb-clients_6.0.15-1_amd64.deb RUN dpkg -i foundationdb-clients_6.0.15-1_amd64.deb ENV GOPATH /usr/bin # Download golang foundationdb api bindings RUN wget https://raw.githubusercontent.com/apple/foundationdb/master/bindings/go/fdb-go-install.sh # Download golang foundationdb api bindings RUN chmod +x /fdb-go-install.sh && /fdb-go-install.sh install --fdbver 6.0.15 # Copy the example app RUN mkdir -p app COPY app/ app # Copy server configuration COPY conf/foundationdb.conf /etc/foundationdb/
Now lets build
FoundationDB client image:
$> docker build -t fdbc . -f FDBClient.Dockerfile # ... output omited
Run client container, after log into client we need create a
FoundationDB cluster file pointed to our server container.
Check the file
conf directory on the host machine,
cat conf/fdb.cluster, in my case the content is
$> docker run -it --rm --network fdbnetwork fdbc shell # change 127.0.0.1 from the cluster file to server public ip $> echo "g2Yn1L0t:[email protected]:4500" > /etc/foundationdb/fdb.cluster # lets check the connection from client to server $> fdbcli Using cluster file /etc/foundationdb/fdb.cluster. The database is available. Welcome to the fdbcli. For help, type `help'. fdb> status details Using cluster file /etc/foundationdb/fdb.cluster. Configuration: ... ... output omited ... fdb>
Lets check if both containers has connection.
# need to enable writemode fdb> writemode on fdb> set foo bar Committed (496648977)
fdb> get foo `foo' is `bar'
Good, at this point we have two
FoundationDB containers with server and client, both containers connected and runned.
It's time to run some code.
In the client containers we have a simple example with measuring of
1_000_000 sets & gets.
To run that code use next commands:
fdb> exit $> cd /app $> go run main.go ...
You can observe the server process perfomance details (on the server container):
$> fdbcli fdb> status details ... output omited
In this how-to we've created two containers with
FoundationDB one acts as server and second one as client.
The client container contains a simple example of code with set & get commands.
Now you have clean room to play with
Post last updated: September 14, 2020