level-ttl - npm Package Compare versions

Comparing version 0.2.0 to 0.3.0

level-ttl.js

@@ -152,2 +152,7 @@ const after    = require('after')
 
+  , ttl = function (db, key, ttl, callback) {
+      if (ttl > 0 && key !== null && key !== undefined)
+        ttlon(db, key, ttl, callback)
+    }
+
   , del = function (db, key, options, callback) {
@@ -230,2 +235,3 @@ var done
       db[options.methodPrefix + 'batch'] = batch.bind(null, db)
+      db[options.methodPrefix + 'ttl']   = ttl.bind(null, db)
       // we must intercept close()
@@ -232,0 +238,0 @@ db['close']                        = close.bind(null, db)

package.json

@@ -8,3 +8,3 @@ {
     ]
-  , "version"          : "0.2.0"
+  , "version"          : "0.3.0"
   , "homepage"         : "https://github.com/rvagg/node-level-ttl"
@@ -14,3 +14,3 @@ , "authors"          : [
     ]
-  , "keywords"         : [ "leveldb", "levelup", "ttl" ]
+  , "keywords"         : [ "leveldb", "levelup", "ttl", "whoa dude!" ]
   , "main"             : "./level-ttl.js"
@@ -22,5 +22,5 @@ , "repository"       : {
   , "dependencies"     : {
-        "after"            : "~0.7.0"
-      , "level-sublevel"   : "~4.7.0"
-      , "xtend"            : "~2.0.3"
+        "after"            : "~0.8.1"
+      , "level-sublevel"   : "~4.7.1"
+      , "xtend"            : "~2.0.6"
     }
@@ -31,4 +31,4 @@ , "peerDependencies" : {
         "tap"              : "*"
-      , "level"          : "*"
-      , "rimraf"           : "~2.1.4"
+      , "level"            : "*"
+      , "rimraf"           : "*"
     }
@@ -39,2 +39,2 @@ , "scripts"          : {
   , "license"          : "MIT"
-}
+}

README.md

@@ -32,2 +32,9 @@ # Level TTL [![Build Status](https://secure.travis-ci.org/rvagg/node-level-ttl.png)](http://travis-ci.org/rvagg/node-level-ttl)
 
+Alternatively, for a lower write-footprint you can use the `ttl()` method that is added to your LevelUP instance which can serve to insert or update a ttl for any given key in the database (even if that key doesn't exist but may in the future! Crazy!).
+
+```js
+db.put('foo', 'bar', function (err) { /* .. */ })
+db.ttl(1000 * 60 * 60, function (err) { /* .. */ })
+```
+
 **Level TTL** uses an internal scan every 10 seconds by default, this limits the available resolution of your TTL values, possibly delaying a delete for up to 10 seconds. The resolution can be tuned by passing the `'checkFrequency'` option to the `ttl()` initialiser.
@@ -34,0 +41,0 @@

test.js

@@ -234,2 +234,43 @@ const test     = require('tap').test
 
+ltest('test prolong entry life with ttl(key, ttl)', function (db, t, createReadStream) {
+  var ttlBar = function () {
+        db.ttl('bar', 40)
+        return Date.now()
+      }
+    , verify = function (base, delay) {
+        setTimeout(function () {
+          db2arr(createReadStream, t, function (err, arr) {
+            t.notOk(err, 'no error')
+            var ts = base + 37
+              , i  = 0
+            // allow +/- 3ms leeway, allow for processing speed and Node timer inaccuracy
+            for (; i < 6 && arr[3] && arr[3].value; i++) {
+              if (arr[3] && arr[3].value == String(ts))
+                break
+              ts++
+            }
+            t.deepEqual(arr, [
+                { key: 'bar', value: 'barvalue' }
+              , { key: 'foo', value: 'foovalue' }
+              , { key: 'ÿttlÿ' + ts + 'ÿbar', value: 'bar' }
+              , { key: 'ÿttlÿbar', value: String(ts) }
+            ])
+          })
+        }, delay)
+      }
+    , retest = function (delay) {
+        setTimeout(function () {
+          var base = ttlBar()
+          verify(base, 10)
+        }, delay)
+      }
+    , i
+
+  db.put('foo', 'foovalue')
+  db.put('bar', 'barvalue')
+  for (i = 0; i < 200; i += 20)
+    retest(i)
+  setTimeout(t.end.bind(t), 300)
+})
+
 ltest('test del', function (db, t, createReadStream) {
@@ -236,0 +277,0 @@ var verify = function (base, delay) {

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Improved metrics

Total package byte prevSize

26338

increased by7.56%

Lines of code

539

increased by8.89%

Number of lines in readme file

54

increased by14.89%

Dependency changes

• + Addedafter@0.8.2(transitive)

• - Removedafter@0.7.0(transitive)

• Updatedafter@~0.8.1

• Updatedlevel-sublevel@~4.7.1

• Updatedxtend@~2.0.6