HTTP store
An implementation of the HTTP store specification.
Instance creation
HttpStore httpStore = new HTTPStore(url);
var httpStore = cds.HTTPStore(url);
my $httpStore = CDS::HTTPStore->new($url);
Instantiates a HTTP store for a url of the form:
http://HOST:PORT/PATH/TO/STORE https://HOST:PORT/PATH/TO/STORE
The port is optional, and defaults to 80 for HTTP, and 443 for HTTPS.
Store behavior
Each store request results in one HTTP request.
Reachability
HTTPStoreState storeState = HTTPStoreManager.getOrCreate(url); int reachable = storeState.isReachable();
Returns the current reachability estimate for the store. The estimate is based on the success of recent requests, and can take one of the following values:
| 1 | The store is probably reachable. A recent request was successful. |
| 0 | It is not known whether the store is reachable. There have not been any requests recently. |
| -1 | The store is probably not reachable. The last request failed. |
Threading
The Java implementation creates up to 3 threads per URL, and dispatches store accesses onto these threads. If a store is slow, this does not affect operations on other stores.