Examples of org.exist.storage.cache.Cache

org.exist.storage.cache.Cache
Base interface for all cache implementations that are used for buffering btree and data pages. @author Wolfgang




    @Override
    public void deregisterCache( Cache cache )
    {
        Cache next;


        for( int i = 0; i < caches.size(); i++ ) {
            next = (Cache)caches.get( i );


            if( cache == next ) {

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     */
    @Override
    public void checkCaches()
    {
        final int   minSize = (int)( totalPageCount * MIN_SHRINK_FACTOR );
        Cache cache;
        int   load;


        if( shrinkThreshold >= 0 ) {


            for( int i = 0; i < caches.size(); i++ ) {
                cache = (Cache)caches.get( i );


                if( cache.getGrowthFactor() > 1.0 ) {
                    load = cache.getLoad();


                    if( ( cache.getBuffers() > minSize ) && ( load < shrinkThreshold ) ) {


                        if( LOG.isDebugEnabled() ) {
                            final NumberFormat nf = NumberFormat.getNumberInstance();
                            LOG.debug( "Shrinking cache: " + cache.getFileName() + " (a " + cache.getClass().getName() + ") to " + nf.format( cache.getBuffers() ) );
                        }
                        currentPageCount -= cache.getBuffers();
                        cache.resize( getDefaultInitialSize() );
                        currentPageCount += getDefaultInitialSize();
                    }
                }
            }
        }

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    {
        if( lastRequest == null ) {
            return;
        }
        final int   minSize = (int)( totalPageCount * MIN_SHRINK_FACTOR );
        Cache cache;


        for( int i = 0; i < caches.size(); i++ ) {
            cache = (Cache)caches.get( i );


            if( cache.getBuffers() >= minSize ) {
                int newSize = (int)( cache.getBuffers() * SHRINK_FACTOR );


                if( LOG.isDebugEnabled() ) {
                    final NumberFormat nf = NumberFormat.getNumberInstance();
                    LOG.debug( "Shrinking cache: " + cache.getFileName() + " (a " + cache.getClass().getName() + ") to " + nf.format( newSize ) );
                }
                currentPageCount -= cache.getBuffers();
                cache.resize( newSize );
                currentPageCount += newSize;
                break;
            }
        }
        lastRequest = null;

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Related Classes of org.exist.storage.cache.Cache

org.exist.storage.DefaultCacheManager

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