Deploy application on Kubernetes Kind
Budget: $30 – $250 USD
Overview
Produce a program capable of storing and retrieving items of data from a lookup table stored in
memory. The lookup table should be located on a remote machine and accessed over a network
connection. For simplicity, it can be assumed the data is indexed by a string and that the payload
(value) is also a string.
The server program should expose a network service, and the client program should be able to
communicate with the server to access data. For example, it should be possible to run the server
program on a machine as follows:
Runs the server
$ ./server
On the same machine (or a second machine), it should be possible to store items of data and
retrieve them using a second “client” program. The interface should look roughly as follows:
Stores a value against a specific key in the server located at "node".
$ ./client <node> set <key> <value>
Retrieves a value for a specific key and prints it, if found.
$ ./client <node> get <key>
<value>
Below is an example of what should be expected to work. In this example, the server is being used to
store the names of capital cities for a country.
$ ./client 127.0.0.1 set norway oslo
$ ./client 127.0.0.1 set denmark copenhagen
$ ./client 127.0.0.1 get norway
oslo
$ ./client 127.0.0.1 get sweden
error: not found
Submission
Submit the following files:
A single .zip or .tar.gz file with the source code for your "server" and "client" program.
A short README file describing how to build (if necessary) and run the code.
Guidelines
The task will be used as the basis for a technical interview to evaluate general understanding of
software development. This task is purposefully very vague about implementation details. Use it to
demonstrate your ability to approach a problem and construct the code to solve the problem, in the
manner you are most confident.
Use any operating system and development tool you like.
Use any programming language you like e.g. Python, C++, C, Go, Rust.
Use any libraries you need to complete the task quickly.
However, avoid simply re-use an existing project which implements a server in this fashion (e.g. an
existing key/value database). Code is expected for the server/client programs.
Use any network protocol and associated library.
Choose a tool that you are most familiar with or that makes the task most straightforward (HTTP,
gRPC, TCP, etc). We are not so interested in the implementation of a network protocol, just use of a
suitable tool to implement the client/server requests.
Extra credit: If time, implement an API of your choice between Client and Server
Extra credit: If time, package the server and run it in a Docker container
Extra credit: If time, deploy a solution with support for auto-scaling (up/down) on Kubernetes (use
kind) and add a Kubernetes service to make the key/value store reachable from outside
- Deliverables
Server/Client code (done)
Make server code containerized (done)
Deploy server on Kubernetes Kind
Produce a program capable of storing and retrieving items of data from a lookup table stored in
memory. The lookup table should be located on a remote machine and accessed over a network
connection. For simplicity, it can be assumed the data is indexed by a string and that the payload
(value) is also a string.
The server program should expose a network service, and the client program should be able to
communicate with the server to access data. For example, it should be possible to run the server
program on a machine as follows:
Runs the server
$ ./server
On the same machine (or a second machine), it should be possible to store items of data and
retrieve them using a second “client” program. The interface should look roughly as follows:
Stores a value against a specific key in the server located at "node".
$ ./client <node> set <key> <value>
Retrieves a value for a specific key and prints it, if found.
$ ./client <node> get <key>
<value>
Below is an example of what should be expected to work. In this example, the server is being used to
store the names of capital cities for a country.
$ ./client 127.0.0.1 set norway oslo
$ ./client 127.0.0.1 set denmark copenhagen
$ ./client 127.0.0.1 get norway
oslo
$ ./client 127.0.0.1 get sweden
error: not found
Submission
Submit the following files:
A single .zip or .tar.gz file with the source code for your "server" and "client" program.
A short README file describing how to build (if necessary) and run the code.
Guidelines
The task will be used as the basis for a technical interview to evaluate general understanding of
software development. This task is purposefully very vague about implementation details. Use it to
demonstrate your ability to approach a problem and construct the code to solve the problem, in the
manner you are most confident.
Use any operating system and development tool you like.
Use any programming language you like e.g. Python, C++, C, Go, Rust.
Use any libraries you need to complete the task quickly.
However, avoid simply re-use an existing project which implements a server in this fashion (e.g. an
existing key/value database). Code is expected for the server/client programs.
Use any network protocol and associated library.
Choose a tool that you are most familiar with or that makes the task most straightforward (HTTP,
gRPC, TCP, etc). We are not so interested in the implementation of a network protocol, just use of a
suitable tool to implement the client/server requests.
Extra credit: If time, implement an API of your choice between Client and Server
Extra credit: If time, package the server and run it in a Docker container
Extra credit: If time, deploy a solution with support for auto-scaling (up/down) on Kubernetes (use
kind) and add a Kubernetes service to make the key/value store reachable from outside
- Deliverables
Server/Client code (done)
Make server code containerized (done)
Deploy server on Kubernetes Kind