diff --git a/README.md b/README.md
index 8e6cbb2..2a37fe3 100644
--- a/README.md
+++ b/README.md
@@ -15,7 +15,7 @@ Only the content between the markers below is rewritten, so the rest of this REA
-Last updated: 2026-04-05T15:49:01.412343645Z
+Last updated: 2026-04-05T16:53:23.606653992Z
### System info
@@ -31,7 +31,7 @@ Last updated: 2026-04-05T15:49:01.412343645Z
- Benchmark: `com.benchmark.benchmarks.DataAccessBenchmark.readSingleUser`
- Thread count: `12`
-- Fixtures in this snapshot: `24`
+- Fixtures in this snapshot: `28`
### Results
@@ -39,34 +39,38 @@ Last updated: 2026-04-05T15:49:01.412343645Z
| Rank | Fixture | Score | Error | Unit |
|---:|---|---:|---:|---|
-| 1 | `in-memory` | 1075.880 | 31.733 | `ops/us` |
-| 2 | `chronicle-map` | 85.407 | 3.388 | `ops/us` |
-| 3 | `memory-mapped-file` | 79.393 | 1.957 | `ops/us` |
-| 4 | `mapdb` | 25.647 | 2.140 | `ops/us` |
-| 5 | `sqlite-jdbc-memory` | 3.992 | 0.195 | `ops/us` |
-| 6 | `lmdb` | 3.300 | 1.325 | `ops/us` |
-| 7 | `kryo` | 2.425 | 0.168 | `ops/us` |
-| 8 | `gson` | 2.159 | 0.080 | `ops/us` |
-| 9 | `sqlite-jdbc` | 1.932 | 0.181 | `ops/us` |
-| 10 | `sqlite-ormlite-memory` | 1.118 | 0.164 | `ops/us` |
-| 11 | `sqlite-ormlite` | 0.864 | 0.049 | `ops/us` |
-| 12 | `duckdb-jdbc` | 0.048 | 0.006 | `ops/us` |
+| 1 | `in-memory` | 1071.748 | 51.460 | `ops/us` |
+| 2 | `chronicle-map` | 84.556 | 5.034 | `ops/us` |
+| 3 | `memory-mapped-file` | 78.969 | 1.996 | `ops/us` |
+| 4 | `datastore4j` | 58.406 | 2.794 | `ops/us` |
+| 5 | `leveldb` | 32.387 | 5.570 | `ops/us` |
+| 6 | `mapdb` | 29.448 | 1.222 | `ops/us` |
+| 7 | `sqlite-jdbc-memory` | 3.847 | 0.463 | `ops/us` |
+| 8 | `lmdb` | 3.210 | 0.725 | `ops/us` |
+| 9 | `kryo` | 2.463 | 0.130 | `ops/us` |
+| 10 | `gson` | 2.198 | 0.057 | `ops/us` |
+| 11 | `sqlite-jdbc` | 1.862 | 0.492 | `ops/us` |
+| 12 | `sqlite-ormlite-memory` | 1.018 | 0.347 | `ops/us` |
+| 13 | `sqlite-ormlite` | 0.835 | 0.279 | `ops/us` |
+| 14 | `duckdb-jdbc` | 0.048 | 0.007 | `ops/us` |
#### AverageTime
| Rank | Fixture | Score | Error | Unit |
|---:|---|---:|---:|---|
-| 1 | `in-memory` | 0.011 | 0.001 | `us/op` |
-| 2 | `chronicle-map` | 0.143 | 0.007 | `us/op` |
-| 3 | `memory-mapped-file` | 0.154 | 0.004 | `us/op` |
-| 4 | `mapdb` | 0.475 | 0.031 | `us/op` |
-| 5 | `sqlite-jdbc-memory` | 3.093 | 0.154 | `us/op` |
-| 6 | `lmdb` | 3.757 | 0.868 | `us/op` |
-| 7 | `kryo` | 4.841 | 0.610 | `us/op` |
-| 8 | `gson` | 5.561 | 0.416 | `us/op` |
-| 9 | `sqlite-jdbc` | 6.192 | 0.496 | `us/op` |
-| 10 | `sqlite-ormlite-memory` | 10.528 | 0.626 | `us/op` |
-| 11 | `sqlite-ormlite` | 13.744 | 1.040 | `us/op` |
-| 12 | `duckdb-jdbc` | 255.975 | 30.802 | `us/op` |
+| 1 | `in-memory` | 0.012 | 0.001 | `us/op` |
+| 2 | `chronicle-map` | 0.150 | 0.017 | `us/op` |
+| 3 | `memory-mapped-file` | 0.155 | 0.008 | `us/op` |
+| 4 | `datastore4j` | 0.228 | 0.016 | `us/op` |
+| 5 | `leveldb` | 0.288 | 0.018 | `us/op` |
+| 6 | `mapdb` | 0.481 | 0.032 | `us/op` |
+| 7 | `sqlite-jdbc-memory` | 2.964 | 0.191 | `us/op` |
+| 8 | `lmdb` | 3.708 | 1.615 | `us/op` |
+| 9 | `kryo` | 4.834 | 0.863 | `us/op` |
+| 10 | `gson` | 5.592 | 0.253 | `us/op` |
+| 11 | `sqlite-jdbc` | 6.108 | 0.397 | `us/op` |
+| 12 | `sqlite-ormlite-memory` | 10.541 | 0.393 | `us/op` |
+| 13 | `sqlite-ormlite` | 17.532 | 7.855 | `us/op` |
+| 14 | `duckdb-jdbc` | 339.471 | 181.558 | `us/op` |
diff --git a/pom.xml b/pom.xml
index 47f709c..b5d17b4 100644
--- a/pom.xml
+++ b/pom.xml
@@ -87,11 +87,30 @@
1.5.1.0
+
+
+ io.github.theuntamed839
+ DataStore4J
+ 0.1.0
+
+
+
+
+ org.iq80.leveldb
+ leveldb-api
+ 0.12
+
+
+ org.iq80.leveldb
+ leveldb
+ 0.12
+
+
org.slf4j
slf4j-nop
- 2.0.17
+ 2.1.0-alpha1
runtime
diff --git a/src/main/java/com/benchmark/benchmarks/DataAccessBenchmark.java b/src/main/java/com/benchmark/benchmarks/DataAccessBenchmark.java
index ddd5a92..1087b7b 100644
--- a/src/main/java/com/benchmark/benchmarks/DataAccessBenchmark.java
+++ b/src/main/java/com/benchmark/benchmarks/DataAccessBenchmark.java
@@ -20,6 +20,8 @@ public class DataAccessBenchmark {
@Param({
"in-memory",
"memory-mapped-file",
+ "datastore4j",
+ "leveldb",
"lmdb",
"mapdb",
"duckdb-jdbc",
diff --git a/src/main/java/com/benchmark/fixtures/DataStore4jFixture.java b/src/main/java/com/benchmark/fixtures/DataStore4jFixture.java
new file mode 100644
index 0000000..2b93275
--- /dev/null
+++ b/src/main/java/com/benchmark/fixtures/DataStore4jFixture.java
@@ -0,0 +1,78 @@
+package com.benchmark.fixtures;
+
+import com.benchmark.model.User;
+import com.esotericsoftware.kryo.Kryo;
+import com.esotericsoftware.kryo.io.Input;
+import com.esotericsoftware.kryo.io.Output;
+import io.github.theuntamed839.datastore4j.db.DB;
+import io.github.theuntamed839.datastore4j.db.DataStore4J;
+import io.github.theuntamed839.datastore4j.db.DbOptions;
+
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.Comparator;
+import java.util.List;
+
+public class DataStore4jFixture implements DataFixtures {
+
+ private DB db;
+ private Kryo kryo;
+ private Path dbDir;
+
+ @Override
+ public void setup(List users) throws Exception {
+ kryo = new Kryo();
+ kryo.setRegistrationRequired(false);
+ kryo.register(User.class);
+
+ dbDir = Files.createTempDirectory("benchmark-datastore4j-");
+ DbOptions options = new DbOptions();
+ db = new DataStore4J(dbDir, options);
+
+ for (User user : users) {
+ db.put(toKey(user.getId()), serialize(user));
+ }
+ }
+
+ @Override
+ public User findById(long id) throws Exception {
+ byte[] bytes = db.get(toKey(id));
+ return bytes == null ? null : deserialize(bytes);
+ }
+
+ @Override
+ public void teardown() throws Exception {
+ if (db != null) {
+ db.close();
+ }
+ if (dbDir != null && Files.exists(dbDir)) {
+ Files.walk(dbDir)
+ .sorted(Comparator.reverseOrder())
+ .forEach(path -> path.toFile().delete());
+ }
+ }
+
+ private byte[] toKey(long id) {
+ return ByteBuffer.allocate(Long.BYTES)
+ .order(ByteOrder.BIG_ENDIAN)
+ .putLong(id)
+ .array();
+ }
+
+ private byte[] serialize(User user) {
+ Output output = new Output(256, -1);
+ kryo.writeObject(output, user);
+ byte[] bytes = output.toBytes();
+ output.close();
+ return bytes;
+ }
+
+ private User deserialize(byte[] bytes) {
+ try (Input input = new Input(bytes)) {
+ return kryo.readObject(input, User.class);
+ }
+ }
+}
diff --git a/src/main/java/com/benchmark/fixtures/FixtureFactory.java b/src/main/java/com/benchmark/fixtures/FixtureFactory.java
index ec20585..31ae003 100644
--- a/src/main/java/com/benchmark/fixtures/FixtureFactory.java
+++ b/src/main/java/com/benchmark/fixtures/FixtureFactory.java
@@ -6,6 +6,8 @@ public class FixtureFactory {
return switch (type) {
case "in-memory" -> new InMemoryFixture();
case "memory-mapped-file" -> new MemoryMappedFileFixture();
+ case "datastore4j" -> new DataStore4jFixture();
+ case "leveldb" -> new LevelDbFixture();
case "lmdb" -> new LmdbFixture();
case "mapdb" -> new MapDbFixture();
case "duckdb-jdbc" -> new DuckDbJdbcFixture();
diff --git a/src/main/java/com/benchmark/fixtures/LevelDbFixture.java b/src/main/java/com/benchmark/fixtures/LevelDbFixture.java
new file mode 100644
index 0000000..0bfde65
--- /dev/null
+++ b/src/main/java/com/benchmark/fixtures/LevelDbFixture.java
@@ -0,0 +1,80 @@
+package com.benchmark.fixtures;
+
+import com.benchmark.model.User;
+import com.esotericsoftware.kryo.Kryo;
+import com.esotericsoftware.kryo.io.Input;
+import com.esotericsoftware.kryo.io.Output;
+import org.iq80.leveldb.DB;
+import org.iq80.leveldb.Options;
+
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.Comparator;
+import java.util.List;
+
+import static org.iq80.leveldb.impl.Iq80DBFactory.factory;
+
+public class LevelDbFixture implements DataFixtures {
+
+ private DB db;
+ private Kryo kryo;
+ private Path dbDir;
+
+ @Override
+ public void setup(List users) throws IOException {
+ kryo = new Kryo();
+ kryo.setRegistrationRequired(false);
+ kryo.register(User.class);
+
+ dbDir = Files.createTempDirectory("benchmark-leveldb-");
+ Options options = new Options();
+ options.createIfMissing(true);
+ db = factory.open(dbDir.toFile(), options);
+
+ for (User user : users) {
+ db.put(toKey(user.getId()), serialize(user));
+ }
+ }
+
+ @Override
+ public User findById(long id) {
+ byte[] bytes = db.get(toKey(id));
+ return bytes == null ? null : deserialize(bytes);
+ }
+
+ @Override
+ public void teardown() throws IOException {
+ if (db != null) {
+ db.close();
+ }
+ if (dbDir != null && Files.exists(dbDir)) {
+ Files.walk(dbDir)
+ .sorted(Comparator.reverseOrder())
+ .forEach(path -> path.toFile().delete());
+ }
+ }
+
+ private byte[] toKey(long id) {
+ return ByteBuffer.allocate(Long.BYTES)
+ .order(ByteOrder.BIG_ENDIAN)
+ .putLong(id)
+ .array();
+ }
+
+ private byte[] serialize(User user) {
+ Output output = new Output(256, -1);
+ kryo.writeObject(output, user);
+ byte[] bytes = output.toBytes();
+ output.close();
+ return bytes;
+ }
+
+ private User deserialize(byte[] bytes) {
+ try (Input input = new Input(bytes)) {
+ return kryo.readObject(input, User.class);
+ }
+ }
+}