THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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public final class Stores { // ... existing methods ... /** * Create a persistent versioned key-value store {@link VersionedBytesStoreSupplier}. * <p> * This store supplier can be passed into a * {@link #versionedKeyValueStoreBuilder(VersionedBytesStoreSupplier, Serde, Serde)}. * * @param name name of the store (cannot be {@code null}) * @param historyRetention length of time that old record versions are available for query * (cannot be negative). If a timestamp bound provided to * {@link VersionedKeyValueStore#get(Object, long)} is older than this * specified history retention, then the get operation will not return data. * @return an instance of {@link VersionedBytesStoreSupplier} * @throws IllegalArgumentException if {@code historyRetention} or {@code segmentInterval} can't be represented as {code long milliseconds} */ public static VersionedBytesStoreSupplier persistentVersionedKeyValueStore(final String name, final Duration historyRetention) { // ... } /** * Create a persistent versioned key-value store {@link VersionedBytesStoreSupplier}. * <p> * This store supplier can be passed into a * {@link #versionedKeyValueStoreBuilder(VersionedBytesStoreSupplier, Serde, Serde)}. * * @param name name of the store (cannot be {@code null}) * @param historyRetention length of time that old record versions are available for query * (cannot be negative). If a timestamp bound provided to * {@link VersionedKeyValueStore#get(Object, long)} is older than this * specified history retention, then the get operation will not return data. * @param segmentInterval size of segments for storing old record versions (must be positive). Old record versions * for the same key in a single segment are stored (updated and accessed) together. * Performance degrades as moreThe only impact of this parameter is performance. If segments are large * and a workload results in many record versions for the same key arebeing collected * in a single segment, performance may degrade as a result. On the other hand, out-of-order writes and reads * * reads and out-of-order writes which access older segments may slow down if * there are too many segments. * @return an instance of {@link VersionedBytesStoreSupplier} * @throws IllegalArgumentException if {@code historyRetention} or {@code segmentInterval} can't be represented as {code long milliseconds} */ public static VersionedBytesStoreSupplier persistentVersionedKeyValueStore(final String name, final Duration historyRetention, final Duration segmentInterval) { // ... } /** * Creates a {@link StoreBuilder} that can be used to build a {@link VersionedKeyValueStore}. * * @param supplier a {@link VersionedBytesStoreSupplier} (cannot be {@code null}) * @param keySerde the key serde to use * @param valueSerde the value serde to use; if the serialized bytes is {@code null} for put operations, * it is treated as a deletion * @param <K> key type * @param <V> value type * @return an instance of a {@link StoreBuilder} that can build a {@link VersionedKeyValueStore} */ public static <K, V> StoreBuilder<VersionedKeyValueStore<K, V>> versionedKeyValueStoreBuilder(final VersionedBytesStoreSupplier supplier, final Serde<K> keySerde, final Serde<V> valueSerde) { // ... } } |
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