Remove lmdb feature

.github/workflows/ci.yml

@@ -57,9 +57,6 @@ jobs:
       - name: Test with db-int-key
         run: cargo test --lib --no-default-features --features "db-int-key" --verbose
 
-      - name: Test with LMDB enabled
-        run: cargo test --all --features "lmdb" --verbose
-
       - name: Test in release mode
         run: cargo test --release --all --verbose
 

Cargo.toml

@@ -11,45 +11,19 @@ documentation = "https://docs.rs/rkv"
 edition = "2018"
 exclude = ["/tests/envs/*"]
 homepage = "https://github.com/mozilla/rkv"
-keywords = ["lmdb", "database", "storage"]
+keywords = ["database", "storage"]
 license = "Apache-2.0"
 name = "rkv"
 readme = "README.md"
 repository = "https://github.com/mozilla/rkv"
 version = "0.19.0"
 rust-version = "1.66"
 
-[[bin]]
-name = "rand"
-path = "src/bin/rand.rs"
-required-features = ["lmdb"]
-
-[[bin]]
-name = "dump"
-path = "src/bin/dump.rs"
-required-features = ["lmdb"]
-
-[[test]]
-name = "env-all"
-required-features = ["lmdb"]
-
-[[test]]
-name = "env-lmdb"
-required-features = ["lmdb"]
-
-[[test]]
-name = "env-migration"
-required-features = ["lmdb"]
-
 [features]
-lmdb = ["lmdb-rkv"]
 db-dup-sort = []
 db-int-key = []
 default = ["db-dup-sort", "db-int-key"]
 no-canonicalize-path = []
-with-asan = ["lmdb", "lmdb-rkv/with-asan"]
-with-fuzzer = ["lmdb", "lmdb-rkv/with-fuzzer"]
-with-fuzzer-no-link = ["lmdb", "lmdb-rkv/with-fuzzer-no-link"]
 
 [dependencies]
 arrayref = "0.3"
@@ -58,7 +32,6 @@ bitflags = {version = "2.4.1", features = ["serde"]}
 byteorder = "1"
 id-arena = "2.2"
 lazy_static = "1.1"
-lmdb-rkv = { version = "0.14", optional = true }
 log = "0.4.20"
 ordered-float = "3.0.0"
 paste = "1.0.6"

README.md

@@ -4,7 +4,7 @@
 [![Documentation](https://docs.rs/rkv/badge.svg)](https://docs.rs/rkv/)
 [![Crate](https://img.shields.io/crates/v/rkv.svg)](https://crates.io/crates/rkv)
 
-The [rkv Rust crate](https://crates.io/crates/rkv) is a simple, humane, typed key-value storage solution. It supports multiple backend engines with varying guarantees, such as [LMDB](http://www.lmdb.tech/doc/) for performance, or "SafeMode" for reliability.
+The [rkv Rust crate](https://crates.io/crates/rkv) is a simple, humane, typed key-value storage solution.
 
 ## ⚠️ Warning ⚠️
 
@@ -22,8 +22,6 @@ let shared_rkv = manager.get_or_create(path, Rkv::new::<SafeMode>).unwrap();
 
 The "SafeMode" backend performs well, with two caveats: the entire database is stored in memory, and write transactions are synchronously written to disk (only on commit).
 
-In the future, it will be advisable to switch to a different backend with better performance guarantees. We're working on either fixing some LMDB crashes, or offering more choices of backend engines (e.g. SQLite).
-
 ## Use
 
 Comprehensive information about using rkv is available in its [online documentation](https://docs.rs/rkv/), which can also be generated for local consumption:
@@ -46,8 +44,6 @@ There are several features that you can opt-in and out of when using rkv:
 
 By default, `db-dup-sort` and `db-int-key` features offer high level database APIs which allow multiple values per key, and optimizations around integer-based keys respectively. Opt out of these default features when specifying the rkv dependency in your Cargo.toml file to disable them; doing so avoids a certain amount of overhead required to support them.
 
-To aid fuzzing efforts, `with-asan`, `with-fuzzer`, and `with-fuzzer-no-link` configure the build scripts responsible with compiling the underlying backing engines (e.g. LMDB) to build with these LLMV features enabled. Please refer to the official LLVM/Clang documentation on them for more informatiuon. These features are also disabled by default.
-
 ## Test
 
 Test this project as you would test other Rust crates:

src/backend.rs

@@ -9,26 +9,11 @@
 // specific language governing permissions and limitations under the License.
 
 mod common;
-#[cfg(feature = "lmdb")]
-mod impl_lmdb;
 mod impl_safe;
 mod traits;
 
 pub use common::*;
 pub use traits::*;
-
-#[cfg(feature = "lmdb")]
-pub use impl_lmdb::{
-    ArchMigrateError as LmdbArchMigrateError, ArchMigrateResult as LmdbArchMigrateResult,
-    ArchMigrator as LmdbArchMigrator, DatabaseFlagsImpl as LmdbDatabaseFlags,
-    DatabaseImpl as LmdbDatabase, EnvironmentBuilderImpl as Lmdb,
-    EnvironmentFlagsImpl as LmdbEnvironmentFlags, EnvironmentImpl as LmdbEnvironment,
-    ErrorImpl as LmdbError, InfoImpl as LmdbInfo, IterImpl as LmdbIter,
-    RoCursorImpl as LmdbRoCursor, RoTransactionImpl as LmdbRoTransaction,
-    RwCursorImpl as LmdbRwCursor, RwTransactionImpl as LmdbRwTransaction, StatImpl as LmdbStat,
-    WriteFlagsImpl as LmdbWriteFlags,
-};
-
 pub use impl_safe::{
     DatabaseFlagsImpl as SafeModeDatabaseFlags, DatabaseImpl as SafeModeDatabase,
     EnvironmentBuilderImpl as SafeMode, EnvironmentFlagsImpl as SafeModeEnvironmentFlags,