diff --git a/Cargo.lock b/Cargo.lock
index 2dc85b8..81a6200 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -17,18 +17,6 @@ version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f26201604c87b1e01bd3d98f8d5d9a8fcbb815e8cedb41ffccbeb4bf593a35fe"
 
-[[package]]
-name = "aes"
-version = "0.7.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9e8b47f52ea9bae42228d07ec09eb676433d7c4ed1ebdf0f1d1c29ed446f1ab8"
-dependencies = [
- "cfg-if",
- "cipher",
- "cpufeatures",
- "opaque-debug",
-]
-
 [[package]]
 name = "aho-corasick"
 version = "1.0.2"
@@ -53,6 +41,20 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "async-compression"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "62b74f44609f0f91493e3082d3734d98497e094777144380ea4db9f9905dd5b6"
+dependencies = [
+ "futures-core",
+ "memchr",
+ "pin-project-lite",
+ "tokio",
+ "zstd",
+ "zstd-safe",
+]
+
 [[package]]
 name = "async-stream"
 version = "0.3.5"
@@ -72,7 +74,7 @@ checksum = "16e62a023e7c117e27523144c5d2459f4397fcc3cab0085af8e2224f643a0193"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.28",
 ]
 
 [[package]]
@@ -83,7 +85,7 @@ checksum = "cc6dde6e4ed435a4c1ee4e73592f5ba9da2151af10076cc04858746af9352d09"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.28",
 ]
 
 [[package]]
@@ -113,12 +115,6 @@ dependencies = [
  "rustc-demangle",
 ]
 
-[[package]]
-name = "base64ct"
-version = "1.0.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8a32fd6af2b5827bce66c29053ba0e7c42b9dcab01835835058558c10851a46b"
-
 [[package]]
 name = "binascii"
 version = "0.1.4"
@@ -199,27 +195,6 @@ version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "89b2fd2a0dcf38d7971e2194b6b6eebab45ae01067456a7fd93d5547a61b70be"
 
-[[package]]
-name = "bzip2"
-version = "0.4.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bdb116a6ef3f6c3698828873ad02c3014b3c85cadb88496095628e3ef1e347f8"
-dependencies = [
- "bzip2-sys",
- "libc",
-]
-
-[[package]]
-name = "bzip2-sys"
-version = "0.1.11+1.0.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "736a955f3fa7875102d57c82b8cac37ec45224a07fd32d58f9f7a186b6cd4cdc"
-dependencies = [
- "cc",
- "libc",
- "pkg-config",
-]
-
 [[package]]
 name = "camino"
 version = "1.1.6"
@@ -269,16 +244,21 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
 [[package]]
 name = "chgk_ledb_lib"
-version = "1.1.0"
-source = "git+https://gitea.b4tman.ru/b4tman/chgk_ledb.git?rev=27260695f7#27260695f7c0427496b02e2a782aa6402c205b01"
+version = "1.2.0"
+source = "git+https://gitea.b4tman.ru/b4tman/chgk_ledb.git?rev=699478f85e#699478f85e53d30ffd5d4e9f7ab167625b00c55e"
 dependencies = [
+ "async-compression",
+ "async-stream",
  "bincode",
- "memmap",
+ "fmmap",
+ "futures",
+ "futures-core",
+ "futures-util",
+ "pin-project",
  "serde",
  "serde_derive",
  "serde_json",
- "zip",
- "zstd",
+ "tokio",
 ]
 
 [[package]]
@@ -315,21 +295,6 @@ dependencies = [
  "phf_codegen",
 ]
 
-[[package]]
-name = "cipher"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7ee52072ec15386f770805afd189a01c8841be8696bed250fa2f13c4c0d6dfb7"
-dependencies = [
- "generic-array",
-]
-
-[[package]]
-name = "constant_time_eq"
-version = "0.1.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "245097e9a4535ee1e3e3931fcfcd55a796a44c643e8596ff6566d68f09b87bbc"
-
 [[package]]
 name = "cookie"
 version = "0.17.0"
@@ -356,15 +321,6 @@ dependencies = [
  "libc",
 ]
 
-[[package]]
-name = "crc32fast"
-version = "1.3.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b540bd8bc810d3885c6ea91e2018302f68baba2129ab3e88f32389ee9370880d"
-dependencies = [
- "cfg-if",
-]
-
 [[package]]
 name = "crossbeam-channel"
 version = "0.5.8"
@@ -449,7 +405,7 @@ dependencies = [
  "proc-macro2",
  "proc-macro2-diagnostics",
  "quote",
- "syn",
+ "syn 2.0.28",
 ]
 
 [[package]]
@@ -460,7 +416,6 @@ checksum = "9ed9a281f7bc9b7576e61468ba615a66a5c8cfdff42420a70aa82701a3b1e292"
 dependencies = [
  "block-buffer",
  "crypto-common",
- "subtle",
 ]
 
 [[package]]
@@ -478,12 +433,35 @@ dependencies = [
  "cfg-if",
 ]
 
+[[package]]
+name = "enum_dispatch"
+version = "0.3.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8f33313078bb8d4d05a2733a94ac4c2d8a0df9a2b84424ebf4f33bfc224a890e"
+dependencies = [
+ "once_cell",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.28",
+]
+
 [[package]]
 name = "equivalent"
 version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5443807d6dff69373d433ab9ef5378ad8df50ca6298caf15de6e52e24aaf54d5"
 
+[[package]]
+name = "errno"
+version = "0.2.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f639046355ee4f37944e44f60642c6f3a7efa3cf6b78c78a0d989a8ce6c396a1"
+dependencies = [
+ "errno-dragonfly",
+ "libc",
+ "winapi",
+]
+
 [[package]]
 name = "errno"
 version = "0.3.2"
@@ -547,13 +525,20 @@ dependencies = [
 ]
 
 [[package]]
-name = "flate2"
-version = "1.0.26"
+name = "fmmap"
+version = "0.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3b9429470923de8e8cbd4d2dc513535400b4b3fef0319fb5c4e1f520a7bef743"
+checksum = "5de47572bd3bf7eb669581e4303b922dde85432800a3228f6824f6a04ee455ab"
 dependencies = [
- "crc32fast",
- "miniz_oxide",
+ "async-trait",
+ "byteorder",
+ "bytes",
+ "enum_dispatch",
+ "fs4",
+ "memmapix",
+ "parse-display",
+ "pin-project-lite",
+ "tokio",
 ]
 
 [[package]]
@@ -562,6 +547,18 @@ version = "1.0.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3f9eec918d3f24069decb9af1554cad7c880e2da24a9afd88aca000531ab82c1"
 
+[[package]]
+name = "fs4"
+version = "0.6.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2eeb4ed9e12f43b7fa0baae3f9cdda28352770132ef2e09a23760c29cae8bd47"
+dependencies = [
+ "async-trait",
+ "rustix 0.38.6",
+ "tokio",
+ "windows-sys 0.48.0",
+]
+
 [[package]]
 name = "fsevent-sys"
 version = "4.1.0"
@@ -579,6 +576,7 @@ checksum = "23342abe12aba583913b2e62f22225ff9c950774065e4bfb61a19cd9770fec40"
 dependencies = [
  "futures-channel",
  "futures-core",
+ "futures-executor",
  "futures-io",
  "futures-sink",
  "futures-task",
@@ -601,12 +599,34 @@ version = "0.3.28"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4bca583b7e26f571124fe5b7561d49cb2868d79116cfa0eefce955557c6fee8c"
 
+[[package]]
+name = "futures-executor"
+version = "0.3.28"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ccecee823288125bd88b4d7f565c9e58e41858e47ab72e8ea2d64e93624386e0"
+dependencies = [
+ "futures-core",
+ "futures-task",
+ "futures-util",
+]
+
 [[package]]
 name = "futures-io"
 version = "0.3.28"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4fff74096e71ed47f8e023204cfd0aa1289cd54ae5430a9523be060cdb849964"
 
+[[package]]
+name = "futures-macro"
+version = "0.3.28"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "89ca545a94061b6365f2c7355b4b32bd20df3ff95f02da9329b34ccc3bd6ee72"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.28",
+]
+
 [[package]]
 name = "futures-sink"
 version = "0.3.28"
@@ -628,6 +648,7 @@ dependencies = [
  "futures-channel",
  "futures-core",
  "futures-io",
+ "futures-macro",
  "futures-sink",
  "futures-task",
  "memchr",
@@ -743,15 +764,6 @@ version = "0.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "443144c8cdadd93ebf52ddb4056d257f5b52c04d3c804e657d19eb73fc33668b"
 
-[[package]]
-name = "hmac"
-version = "0.12.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6c49c37c09c17a53d937dfbb742eb3a961d65a994e6bcdcf37e7399d0cc8ab5e"
-dependencies = [
- "digest",
-]
-
 [[package]]
 name = "http"
 version = "0.2.9"
@@ -906,6 +918,12 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "io-lifetimes"
+version = "0.7.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "59ce5ef949d49ee85593fc4d3f3f95ad61657076395cbbce23e2121fc5542074"
+
 [[package]]
 name = "is-terminal"
 version = "0.4.9"
@@ -913,7 +931,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cb0889898416213fab133e1d33a0e5858a48177452750691bde3666d0fdbaf8b"
 dependencies = [
  "hermit-abi",
- "rustix",
+ "rustix 0.38.6",
  "windows-sys 0.48.0",
 ]
 
@@ -979,6 +997,12 @@ version = "0.2.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f7012b1bbb0719e1097c47611d3898568c546d597c2e74d66f6087edd5233ff4"
 
+[[package]]
+name = "linux-raw-sys"
+version = "0.0.46"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d4d2456c373231a208ad294c33dc5bff30051eafd954cd4caae83a712b12854d"
+
 [[package]]
 name = "linux-raw-sys"
 version = "0.4.5"
@@ -1032,13 +1056,12 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2dffe52ecf27772e601905b7522cb4ef790d2cc203488bbd0e2fe85fcb74566d"
 
 [[package]]
-name = "memmap"
-version = "0.7.0"
+name = "memmapix"
+version = "0.6.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6585fd95e7bb50d6cc31e20d4cf9afb4e2ba16c5846fc76793f11218da9c475b"
+checksum = "aa20aa603283688ba48d9ee8c225b900aebf0d0a871630ed5239e7bf606e5fd1"
 dependencies = [
- "libc",
- "winapi",
+ "rustix 0.35.14",
 ]
 
 [[package]]
@@ -1174,12 +1197,6 @@ version = "1.18.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dd8b5dd2ae5ed71462c540258bedcb51965123ad7e7ccf4b9a8cafaa4a63576d"
 
-[[package]]
-name = "opaque-debug"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "624a8340c38c1b80fd549087862da4ba43e08858af025b236e509b6649fc13d5"
-
 [[package]]
 name = "overload"
 version = "0.1.1"
@@ -1209,6 +1226,32 @@ dependencies = [
  "windows-targets 0.48.1",
 ]
 
+[[package]]
+name = "parse-display"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3b25af4ef94a8528b41fb49a696e361dc6ef975c782417268072d987ac327964"
+dependencies = [
+ "once_cell",
+ "parse-display-derive",
+ "regex",
+]
+
+[[package]]
+name = "parse-display-derive"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "73f106cced1f4b645e3fca6125105cdf7407e35d1af710f290aac530f6b826b9"
+dependencies = [
+ "once_cell",
+ "proc-macro2",
+ "quote",
+ "regex",
+ "regex-syntax 0.6.29",
+ "structmeta",
+ "syn 1.0.109",
+]
+
 [[package]]
 name = "parse-zoneinfo"
 version = "0.3.0"
@@ -1218,29 +1261,6 @@ dependencies = [
  "regex",
 ]
 
-[[package]]
-name = "password-hash"
-version = "0.3.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1d791538a6dcc1e7cb7fe6f6b58aca40e7f79403c45b2bc274008b5e647af1d8"
-dependencies = [
- "base64ct",
- "rand_core",
- "subtle",
-]
-
-[[package]]
-name = "pbkdf2"
-version = "0.10.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "271779f35b581956db91a3e55737327a03aa051e90b1c47aeb189508533adfd7"
-dependencies = [
- "digest",
- "hmac",
- "password-hash",
- "sha2",
-]
-
 [[package]]
 name = "pear"
 version = "0.2.7"
@@ -1261,7 +1281,7 @@ dependencies = [
  "proc-macro2",
  "proc-macro2-diagnostics",
  "quote",
- "syn",
+ "syn 2.0.28",
 ]
 
 [[package]]
@@ -1300,7 +1320,7 @@ dependencies = [
  "pest_meta",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.28",
 ]
 
 [[package]]
@@ -1353,6 +1373,26 @@ dependencies = [
  "uncased",
 ]
 
+[[package]]
+name = "pin-project"
+version = "1.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fda4ed1c6c173e3fc7a83629421152e01d7b1f9b7f65fb301e490e8cfc656422"
+dependencies = [
+ "pin-project-internal",
+]
+
+[[package]]
+name = "pin-project-internal"
+version = "1.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4359fd9c9171ec6e8c62926d6faaf553a8dc3f64e1507e76da7911b4f6a04405"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.28",
+]
+
 [[package]]
 name = "pin-project-lite"
 version = "0.2.10"
@@ -1394,7 +1434,7 @@ checksum = "af066a9c399a26e020ada66a034357a868728e72cd426f3adcd35f80d88d88c8"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.28",
  "version_check",
  "yansi 1.0.0-rc",
 ]
@@ -1486,7 +1526,7 @@ checksum = "2dfaf0c85b766276c797f3791f5bc6d5bd116b41d53049af2789666b0c0bc9fa"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.28",
 ]
 
 [[package]]
@@ -1584,7 +1624,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "rocket_http",
- "syn",
+ "syn 2.0.28",
  "unicode-xid",
 ]
 
@@ -1634,6 +1674,20 @@ version = "0.1.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d626bb9dae77e28219937af045c257c28bfd3f69333c512553507f5f9798cb76"
 
+[[package]]
+name = "rustix"
+version = "0.35.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6380889b07a03b5ecf1d44dc9ede6fd2145d84b502a2a9ca0b03c48e0cc3220f"
+dependencies = [
+ "bitflags 1.3.2",
+ "errno 0.2.8",
+ "io-lifetimes",
+ "libc",
+ "linux-raw-sys 0.0.46",
+ "windows-sys 0.42.0",
+]
+
 [[package]]
 name = "rustix"
 version = "0.38.6"
@@ -1641,9 +1695,9 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1ee020b1716f0a80e2ace9b03441a749e402e86712f15f16fe8a8f75afac732f"
 dependencies = [
  "bitflags 2.3.3",
- "errno",
+ "errno 0.3.2",
  "libc",
- "linux-raw-sys",
+ "linux-raw-sys 0.4.5",
  "windows-sys 0.48.0",
 ]
 
@@ -1706,7 +1760,7 @@ checksum = "be02f6cb0cd3a5ec20bbcfbcbd749f57daddb1a0882dc2e46a6c236c90b977ed"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.28",
 ]
 
 [[package]]
@@ -1729,17 +1783,6 @@ dependencies = [
  "serde",
 ]
 
-[[package]]
-name = "sha1"
-version = "0.10.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f04293dc80c3993519f2d7f6f511707ee7094fe0c6d3406feb330cdb3540eba3"
-dependencies = [
- "cfg-if",
- "cpufeatures",
- "digest",
-]
-
 [[package]]
 name = "sha2"
 version = "0.10.7"
@@ -1849,10 +1892,38 @@ dependencies = [
 ]
 
 [[package]]
-name = "subtle"
-version = "2.4.1"
+name = "structmeta"
+version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6bdef32e8150c2a081110b42772ffe7d7c9032b606bc226c8260fd97e0976601"
+checksum = "104842d6278bf64aa9d2f182ba4bde31e8aec7a131d29b7f444bb9b344a09e2a"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "structmeta-derive",
+ "syn 1.0.109",
+]
+
+[[package]]
+name = "structmeta-derive"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "24420be405b590e2d746d83b01f09af673270cf80e9b003a5fa7b651c58c7d93"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 1.0.109",
+]
+
+[[package]]
+name = "syn"
+version = "1.0.109"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "72b64191b275b66ffe2469e8af2c1cfe3bafa67b529ead792a6d0160888b4237"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
 
 [[package]]
 name = "syn"
@@ -1880,7 +1951,7 @@ dependencies = [
  "cfg-if",
  "fastrand",
  "redox_syscall",
- "rustix",
+ "rustix 0.38.6",
  "windows-sys 0.48.0",
 ]
 
@@ -1924,7 +1995,7 @@ checksum = "090198534930841fab3a5d1bb637cde49e339654e606195f8d9c76eeb081dc96"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.28",
 ]
 
 [[package]]
@@ -1991,7 +2062,7 @@ checksum = "630bdcf245f78637c13ec01ffae6187cca34625e8c63150d424b59e55af2675e"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.28",
 ]
 
 [[package]]
@@ -2079,7 +2150,7 @@ checksum = "5f4f31f56159e98206da9efd823404b79b6ef3143b4a7ab76e67b1751b25a4ab"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.28",
 ]
 
 [[package]]
@@ -2299,7 +2370,7 @@ dependencies = [
  "once_cell",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.28",
  "wasm-bindgen-shared",
 ]
 
@@ -2321,7 +2392,7 @@ checksum = "54681b18a46765f095758388f2d0cf16eb8d4169b639ab575a8f5693af210c7b"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.28",
  "wasm-bindgen-backend",
  "wasm-bindgen-shared",
 ]
@@ -2372,6 +2443,21 @@ dependencies = [
  "windows-targets 0.48.1",
 ]
 
+[[package]]
+name = "windows-sys"
+version = "0.42.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5a3e1820f08b8513f676f7ab6c1f99ff312fb97b553d30ff4dd86f9f15728aa7"
+dependencies = [
+ "windows_aarch64_gnullvm 0.42.2",
+ "windows_aarch64_msvc 0.42.2",
+ "windows_i686_gnu 0.42.2",
+ "windows_i686_msvc 0.42.2",
+ "windows_x86_64_gnu 0.42.2",
+ "windows_x86_64_gnullvm 0.42.2",
+ "windows_x86_64_msvc 0.42.2",
+]
+
 [[package]]
 name = "windows-sys"
 version = "0.45.0"
@@ -2525,40 +2611,20 @@ version = "1.0.0-rc"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9ee746ad3851dd3bc40e4a028ab3b00b99278d929e48957bcb2d111874a7e43e"
 
-[[package]]
-name = "zip"
-version = "0.6.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bf225bcf73bb52cbb496e70475c7bd7a3f769df699c0020f6c7bd9a96dcf0b8d"
-dependencies = [
- "aes",
- "byteorder",
- "bzip2",
- "constant_time_eq",
- "crc32fast",
- "crossbeam-utils",
- "flate2",
- "hmac",
- "pbkdf2",
- "sha1",
- "time",
- "zstd",
-]
-
 [[package]]
 name = "zstd"
-version = "0.10.2+zstd.1.5.2"
+version = "0.12.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5f4a6bd64f22b5e3e94b4e238669ff9f10815c27a5180108b849d24174a83847"
+checksum = "1a27595e173641171fc74a1232b7b1c7a7cb6e18222c11e9dfb9888fa424c53c"
 dependencies = [
  "zstd-safe",
 ]
 
 [[package]]
 name = "zstd-safe"
-version = "4.1.6+zstd.1.5.2"
+version = "6.0.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "94b61c51bb270702d6167b8ce67340d2754b088d0c091b06e593aa772c3ee9bb"
+checksum = "ee98ffd0b48ee95e6c5168188e44a54550b1564d9d530ee21d5f0eaed1069581"
 dependencies = [
  "libc",
  "zstd-sys",
@@ -2566,10 +2632,11 @@ dependencies = [
 
 [[package]]
 name = "zstd-sys"
-version = "1.6.3+zstd.1.5.2"
+version = "2.0.8+zstd.1.5.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fc49afa5c8d634e75761feda8c592051e7eeb4683ba827211eb0d731d3402ea8"
+checksum = "5556e6ee25d32df2586c098bbfa278803692a20d0ab9565e049480d52707ec8c"
 dependencies = [
  "cc",
  "libc",
+ "pkg-config",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index b8b4b34..3b676b5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -13,7 +13,7 @@ readme = "README.md"
 rand="0.8"
 rocket = { version = "=0.5.0-rc.3", features = ["json"] }
 rocket_dyn_templates = { version = "=0.1.0-rc.3", features = ["tera"] }
-chgk_ledb_lib = {git = "https://gitea.b4tman.ru/b4tman/chgk_ledb.git", rev="27260695f7", package="chgk_ledb_lib"}
+chgk_ledb_lib = {git = "https://gitea.b4tman.ru/b4tman/chgk_ledb.git", rev="699478f85e", package="chgk_ledb_lib", features=["async"]}
 mini-moka = "0.10.0"
 
 [profile.release]
diff --git a/src/main.rs b/src/main.rs
index c8ad6fc..fbf09b4 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,11 +1,11 @@
 #[macro_use]
 extern crate rocket;
 
+use rocket::fs::FileServer;
 use rocket::response::Redirect;
 use rocket::State;
-use rocket::fs::FileServer;
-use rocket_dyn_templates::Template;
 use rocket_dyn_templates::tera;
+use rocket_dyn_templates::Template;
 
 use rand::distributions::Uniform;
 use rand::Rng;
@@ -13,7 +13,7 @@ use rand::Rng;
 use std::ops::Deref;
 use std::sync::Arc;
 
-use chgk_ledb_lib::db;
+use chgk_ledb_lib::async_db;
 use chgk_ledb_lib::questions::Question;
 
 use mini_moka::sync::Cache;
@@ -51,7 +51,7 @@ impl ArcTemplateData {
 
 type TemplateCache = mini_moka::sync::Cache<usize, ArcTemplateData>;
 
-type DataBaseInner = db::Reader<Question>;
+type DataBaseInner = async_db::Reader<Question>;
 type DataBase = Arc<DataBaseInner>;
 struct AppState {
     db: DataBase,
@@ -76,11 +76,11 @@ fn random_question_id(database_distribution: &Uniform<usize>) -> usize {
     rng.sample(database_distribution)
 }
 
-fn get_question(db: &DataBase, id: usize) -> Result<Question, ()> {
-    db.get(id - 1).err_empty()
+async fn get_question(db: &DataBase, id: usize) -> Result<Question, ()> {
+    db.get(id - 1).await.err_empty()
 }
 
-fn show_question_details(
+async fn show_question_details(
     template_name: &'static str,
     data: &AppState,
     cache: &TemplateCache,
@@ -90,7 +90,7 @@ fn show_question_details(
         return value.render(template_name);
     }
 
-    match get_question(&data.db, id) {
+    match get_question(&data.db, id).await {
         Ok(question) => {
             let mut context = tera::to_value(question).expect("question serialize");
             if context.is_object() {
@@ -113,13 +113,17 @@ fn show_question_details(
 }
 
 #[get("/q/<id>")]
-fn show_question(data: &State<AppState>, cache: &State<TemplateCache>, id: usize) -> Template {
-    show_question_details("question", data.inner(), cache.inner(), id)
+async fn show_question(
+    data: &State<AppState>,
+    cache: &State<TemplateCache>,
+    id: usize,
+) -> Template {
+    show_question_details("question", data.inner(), cache.inner(), id).await
 }
 
 #[get("/q/<id>/a")]
-fn show_answer(data: &State<AppState>, cache: &State<TemplateCache>, id: usize) -> Template {
-    show_question_details("answer", data.inner(), cache.inner(), id)
+async fn show_answer(data: &State<AppState>, cache: &State<TemplateCache>, id: usize) -> Template {
+    show_question_details("answer", data.inner(), cache.inner(), id).await
 }
 
 #[get("/q/0")]
@@ -146,8 +150,11 @@ fn not_found(_req: &rocket::Request) -> Template {
 }
 
 #[launch]
-fn rocket() -> _ {
-    let state: AppState = db::Reader::new(DB_FILENAME, 2048).expect("open db").into();
+async fn rocket() -> _ {
+    let state: AppState = async_db::Reader::new(DB_FILENAME)
+        .await
+        .expect("open db")
+        .into();
     let cache: TemplateCache = Cache::builder()
         .time_to_idle(Duration::from_secs(15 * 60))
         .max_capacity(300)
@@ -165,4 +172,3 @@ fn rocket() -> _ {
         .mount("/q/static", FileServer::from("static/"))
         .attach(Template::fairing())
 }
-