backend: @nxtedition/rocksdb

README.md

@@ -140,14 +140,20 @@ Our test suite focuses on the following backends:
 - [`memory-level`][db3] for volatile in-memory storage using red-black trees
 - ~~[`rocksdb`][db4] for persistent storage using [RocksDB][db5]~~
   - waiting for the `rocks-level` package to be published
+- [`@nxtedition/rocks-level`][db7] for persistent storage using [RocksDB][db5]
+  - this is an alternative backend for RocksDB that tends to be 20% - 30%
+    faster then `classic-level` but is maintained outside of the [Level][db8]
+    community and set of _official_ packages
 
 [db0]: http://leveldb.org
-[db1]: https://github.com/Level/abstract-level
+[db1]: https://github.com/level/abstract-level
 [db2]: https://github.com/level/classic-level
 [db3]: https://github.com/level/memory-level
 [db4]: https://github.com/level/rocksdb
 [db5]: https://rocksdb.org
 [db6]: https://github.com/level/awesome#stores
+[db7]: https://github.com/nxtedition/rocks-level
+[db8]: https://github.com/level
 
 ### Data model and return values
 

package.json

@@ -53,6 +53,7 @@
     "url": "https://github.com/jacoscaz/quadstore.git"
   },
   "devDependencies": {
+    "@nxtedition/rocksdb": "^9.0.1",
     "@types/chai": "^4.3.11",
     "@types/mocha": "^10.0.6",
     "@types/n3": "^1.16.4",

test/backends/rockslevel-nxtedition.ts

@@ -0,0 +1,36 @@
+
+import os from 'os';
+import fs from 'fs/promises';
+import path from 'path';
+import { DataFactory } from 'rdf-data-factory';
+import { runQuadstoreTests } from '../quadstore/quadstore';
+import { uid } from '../../dist/esm/utils/uid';
+
+export const runRocksLevelNXTEditionTests = () => {
+
+  describe('RocksLevel (NXTEdition) backend', () => {
+
+    beforeEach(async function () {
+
+      // @ts-ignore
+      const { RocksLevel } = await import('@nxtedition/rocksdb');
+
+      this.location = path.join(os.tmpdir(), `quadstore-${uid()}`);
+      this.db = new RocksLevel(this.location);
+      this.indexes = null;
+      this.dataFactory = new DataFactory();
+      this.prefixes = {
+        expandTerm: (term: string) => term,
+        compactIri: (iri: string) => iri,
+      };
+    });
+
+    afterEach(async function () {
+      await fs.rm(this.location, { recursive: true, force: true, maxRetries: 3, retryDelay: 500 });
+    });
+
+    runQuadstoreTests();
+
+  });
+
+};

test/node.ts

@@ -1,9 +1,11 @@
 
 import { runMemoryLevelTests } from './backends/memorylevel';
 import { runClassicLevelTests } from './backends/classiclevel';
+import { runRocksLevelNXTEditionTests } from './backends/rockslevel-nxtedition';
 import { runOtherTests } from './others/others';
 
 runOtherTests();
 runMemoryLevelTests();
 runClassicLevelTests();
+runRocksLevelNXTEditionTests();