106 lines
3.3 KiB
Markdown
106 lines
3.3 KiB
Markdown
|
# BigCache HTTP Server
|
||
|
|
|
||
|
|
This is a basic HTTP server implementation for BigCache. It has a basic RESTful API and is designed for easy operational deployments. This server is intended to be consumed as a standalone executable, for things like Cloud Foundry, Heroku, etc. A design goal is versatility, so if you want to cache pictures, software artifacts, text, or any type of bit, the BigCache HTTP Server should fit your needs.
|
||
|
|
|
||
|
|
```bash
|
||
|
|
# cache API.
|
||
|
|
GET /api/v1/cache/{key}
|
||
|
|
PUT /api/v1/cache/{key}
|
||
|
|
DELETE /api/v1/cache/{key}
|
||
|
|
|
||
|
|
# stats API.
|
||
|
|
GET /api/v1/stats
|
||
|
|
```
|
||
|
|
|
||
|
|
The cache API is designed for ease-of-use caching and accepts any content type. The stats API will return hit and miss statistics about the cache since the last time the server was started - they will reset whenever the server is restarted.
|
||
|
|
|
||
|
|
### Notes for Operators
|
||
|
|
|
||
|
|
1. No SSL support, currently.
|
||
|
|
1. No authentication, currently.
|
||
|
|
1. Stats from the stats API are not persistent.
|
||
|
|
1. The easiest way to clean the cache is to restart the process; it takes less than a second to initialise.
|
||
|
|
1. There is no replication or clustering.
|
||
|
|
|
||
|
|
### Command-line Interface
|
||
|
|
|
||
|
|
```powershell
|
||
|
|
PS C:\go\src\github.com\mxplusb\bigcache\server> .\server.exe -h
|
||
|
|
Usage of C:\go\src\github.com\mxplusb\bigcache\server\server.exe:
|
||
|
|
-lifetime duration
|
||
|
|
Lifetime of each cache object. (default 10m0s)
|
||
|
|
-logfile string
|
||
|
|
Location of the logfile.
|
||
|
|
-max int
|
||
|
|
Maximum amount of data in the cache in MB. (default 8192)
|
||
|
|
-maxInWindow int
|
||
|
|
Used only in initial memory allocation. (default 600000)
|
||
|
|
-maxShardEntrySize int
|
||
|
|
The maximum size of each object stored in a shard. Used only in initial memory allocation. (default 500)
|
||
|
|
-port int
|
||
|
|
The port to listen on. (default 9090)
|
||
|
|
-shards int
|
||
|
|
Number of shards for the cache. (default 1024)
|
||
|
|
-v Verbose logging.
|
||
|
|
-version
|
||
|
|
Print server version.
|
||
|
|
```
|
||
|
|
|
||
|
|
Example:
|
||
|
|
|
||
|
|
```bash
|
||
|
|
$ curl -v -XPUT localhost:9090/api/v1/cache/example -d "yay!"
|
||
|
|
* Trying 127.0.0.1...
|
||
|
|
* Connected to localhost (127.0.0.1) port 9090 (#0)
|
||
|
|
> PUT /api/v1/cache/example HTTP/1.1
|
||
|
|
> Host: localhost:9090
|
||
|
|
> User-Agent: curl/7.47.0
|
||
|
|
> Accept: */*
|
||
|
|
> Content-Length: 4
|
||
|
|
> Content-Type: application/x-www-form-urlencoded
|
||
|
|
>
|
||
|
|
* upload completely sent off: 4 out of 4 bytes
|
||
|
|
< HTTP/1.1 201 Created
|
||
|
|
< Date: Fri, 17 Nov 2017 03:50:07 GMT
|
||
|
|
< Content-Length: 0
|
||
|
|
< Content-Type: text/plain; charset=utf-8
|
||
|
|
<
|
||
|
|
* Connection #0 to host localhost left intact
|
||
|
|
$
|
||
|
|
$ curl -v -XGET localhost:9090/api/v1/cache/example
|
||
|
|
Note: Unnecessary use of -X or --request, GET is already inferred.
|
||
|
|
* Trying 127.0.0.1...
|
||
|
|
* Connected to localhost (127.0.0.1) port 9090 (#0)
|
||
|
|
> GET /api/v1/cache/example HTTP/1.1
|
||
|
|
> Host: localhost:9090
|
||
|
|
> User-Agent: curl/7.47.0
|
||
|
|
> Accept: */*
|
||
|
|
>
|
||
|
|
< HTTP/1.1 200 OK
|
||
|
|
< Date: Fri, 17 Nov 2017 03:50:23 GMT
|
||
|
|
< Content-Length: 4
|
||
|
|
< Content-Type: text/plain; charset=utf-8
|
||
|
|
<
|
||
|
|
* Connection #0 to host localhost left intact
|
||
|
|
yay!
|
||
|
|
```
|
||
|
|
|
||
|
|
The server does log basic metrics:
|
||
|
|
|
||
|
|
```bash
|
||
|
|
$ ./server
|
||
|
|
2017/11/16 22:49:22 cache initialised.
|
||
|
|
2017/11/16 22:49:22 starting server on :9090
|
||
|
|
2017/11/16 22:50:07 stored "example" in cache.
|
||
|
|
2017/11/16 22:50:07 request took 277000ns.
|
||
|
|
2017/11/16 22:50:23 request took 9000ns.
|
||
|
|
```
|
||
|
|
|
||
|
|
### Acquiring Natively
|
||
|
|
|
||
|
|
This is native Go with no external dependencies, so it will compile for all supported Golang platforms. To build:
|
||
|
|
|
||
|
|
```bash
|
||
|
|
go build server.go
|
||
|
|
```
|