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Clarified COUNT's behavior. scan() now will run until cursor reaches 0.

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Jeremiah Lee Cohick
2015-07-10 18:04:38 -07:00
parent 6f28c6acf5
commit ff020d37f3
1 changed files with 9 additions and 7 deletions
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16
examples/scan.js
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@@ -15,19 +15,21 @@ function scan() {
cursor = res[0]; cursor = res[0];
// From <http://redis.io/commands/scan>: // From <http://redis.io/commands/scan>:
// An iteration starts when the cursor is set to 0, // "An iteration starts when the cursor is set to 0,
// and terminates when the cursor returned by the server is 0. // and terminates when the cursor returned by the server is 0."
if (cursor === '0') { if (cursor === '0') {
return console.log('Iteration complete'); return console.log('Iteration complete');
} else { } else {
// Remember, more keys than COUNT or no keys may be returned // Remember: more or less than COUNT or no keys may be returned
// See http://redis.io/commands/scan#the-count-option // See http://redis.io/commands/scan#the-count-option
// Also, SCAN may return the same key multiple times
// See http://redis.io/commands/scan#scan-guarantees
if (res[1].length > 0) { if (res[1].length > 0) {
return console.log('Array of matching keys', res[1]); console.log('Array of matching keys', res[1]);
} else {
// No keys were returned in this scan, but more keys exist.
return scan();
} }
return scan();
} }
} }
); );