Created
June 19, 2012 20:06
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Evaluating memory consumption of 1M targeted tag sets
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var redis = require('redis') | |
var rc = redis.createClient(6379, 'localhost'); | |
function create( target, callback ) | |
{ | |
x = [] | |
for ( var i=0; i<40; ++i ) | |
{ | |
// Only 100K entries in the reverse index | |
var n = 1000*Math.round(Math.random()*100000); | |
x.push(n); | |
} | |
var multi = rc.multi() | |
multi.sadd( "tgt:"+target, x ) | |
x.forEach( function( xn ) { | |
multi.sadd( "tag:"+xn, target ) | |
}); | |
multi.exec( function(err,replies) { | |
callback() | |
}); | |
} | |
function filln( offset, N, callback ) | |
{ | |
var count = 0; | |
for ( i=0; i<N; ++i ) { | |
create(offset+i, function () { | |
count++; | |
if ( count == N ) | |
callback() | |
}) | |
} | |
} | |
function fill( N, i, callback ) | |
{ | |
if ( i >= N/1000 ) { | |
callback(); | |
return | |
} | |
filln( i*1000, 1000, function() { | |
console.log( "Done",i); | |
fill( N, ++i, callback ) | |
}); | |
} | |
rc.flushall( function(err,rr) { | |
fill( 1000000, 0, function() { | |
console.log("end"); | |
}) | |
}) |
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