diff --git a/go.mod b/go.mod
index 133700f6a..9b3f0722d 100644
--- a/go.mod
+++ b/go.mod
@@ -12,6 +12,8 @@ require (
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/kr/pretty v0.1.0 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/vmihailenco/msgpack/v5 v5.4.1 // indirect
+	github.com/vmihailenco/tagparser/v2 v2.0.0 // indirect
 	gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )
diff --git a/go.sum b/go.sum
index ad7a24b92..04639096c 100644
--- a/go.sum
+++ b/go.sum
@@ -17,6 +17,10 @@ github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/
 github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
 github.com/stretchr/testify v1.8.1 h1:w7B6lhMri9wdJUVmEZPGGhZzrYTPvgJArz7wNPgYKsk=
 github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
+github.com/vmihailenco/msgpack/v5 v5.4.1 h1:cQriyiUvjTwOHg8QZaPihLWeRAAVoCpE00IUPn0Bjt8=
+github.com/vmihailenco/msgpack/v5 v5.4.1/go.mod h1:GaZTsDaehaPpQVyxrf5mtQlH+pc21PIudVV/E3rRQok=
+github.com/vmihailenco/tagparser/v2 v2.0.0 h1:y09buUbR+b5aycVFQs/g70pqKVZNBmxwAhO7/IwNM9g=
+github.com/vmihailenco/tagparser/v2 v2.0.0/go.mod h1:Wri+At7QHww0WTrCBeu4J6bNtoV6mEfg5OIWRZA9qds=
 golang.org/x/sys v0.16.0 h1:xWw16ngr6ZMtmxDyKyIgsE93KNKz5HKmMa3b8ALHidU=
 golang.org/x/sys v0.16.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
diff --git a/internal/api/bindings.h b/internal/api/bindings.h
index 2d2835f5f..696a45d02 100644
--- a/internal/api/bindings.h
+++ b/internal/api/bindings.h
@@ -426,6 +426,8 @@ struct AnalysisReport analyze_code(struct cache_t *cache,
 
 struct Metrics get_metrics(struct cache_t *cache, struct UnmanagedVector *error_msg);
 
+struct UnmanagedVector get_pinned_metrics(struct cache_t *cache, struct UnmanagedVector *error_msg);
+
 /**
  * frees a cache reference
  *
diff --git a/internal/api/lib.go b/internal/api/lib.go
index 71b5a19ae..37338d437 100644
--- a/internal/api/lib.go
+++ b/internal/api/lib.go
@@ -14,6 +14,7 @@ import (
 	"golang.org/x/sys/unix"
 
 	"github.com/CosmWasm/wasmvm/v2/types"
+	"github.com/vmihailenco/msgpack/v5"
 )
 
 // Value types
@@ -188,6 +189,21 @@ func GetMetrics(cache Cache) (*types.Metrics, error) {
 	}, nil
 }
 
+func GetPinnedMetrics(cache Cache) (*types.PinnedMetrics, error) {
+	errmsg := uninitializedUnmanagedVector()
+	metrics, err := C.get_pinned_metrics(cache.ptr, &errmsg)
+	if err != nil {
+		return nil, errorWithMessage(err, errmsg)
+	}
+
+	var pinnedMetrics types.PinnedMetrics
+	if err := msgpack.Unmarshal(copyAndDestroyUnmanagedVector(metrics), &pinnedMetrics); err != nil {
+		return nil, err
+	}
+
+	return &pinnedMetrics, nil
+}
+
 func Instantiate(
 	cache Cache,
 	checksum []byte,
diff --git a/libwasmvm/Cargo.lock b/libwasmvm/Cargo.lock
index 02425bf98..58be8ec95 100644
--- a/libwasmvm/Cargo.lock
+++ b/libwasmvm/Cargo.lock
@@ -19,21 +19,15 @@ checksum = "f26201604c87b1e01bd3d98f8d5d9a8fcbb815e8cedb41ffccbeb4bf593a35fe"
 
 [[package]]
 name = "ahash"
-version = "0.7.7"
+version = "0.7.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5a824f2aa7e75a0c98c5a504fceb80649e9c35265d44525b5f94de4771a395cd"
+checksum = "891477e0c6a8957309ee5c45a6368af3ae14bb510732d2684ffa19af310920f9"
 dependencies = [
  "getrandom",
  "once_cell",
  "version_check",
 ]
 
-[[package]]
-name = "arrayvec"
-version = "0.7.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "96d30a06541fbafbc7f82ed10c06164cfbd2c401138f6addd8404629c4b16711"
-
 [[package]]
 name = "atty"
 version = "0.2.14"
@@ -264,11 +258,13 @@ dependencies = [
 [[package]]
 name = "cosmwasm-crypto"
 version = "2.0.0"
-source = "git+https://github.com/CosmWasm/cosmwasm.git?rev=v2.0.0#336afd2e62f83ea632bb4b2f94488b228ca2e28a"
+source = "git+https://github.com/CosmWasm/cosmwasm.git?rev=f1fa4bb35a1fc8ad5f48d079c1d29e5b2a1d4018#f1fa4bb35a1fc8ad5f48d079c1d29e5b2a1d4018"
 dependencies = [
  "digest 0.10.7",
+ "ecdsa",
  "ed25519-zebra",
  "k256",
+ "p256",
  "rand_core 0.6.4",
  "thiserror",
 ]
@@ -276,7 +272,7 @@ dependencies = [
 [[package]]
 name = "cosmwasm-derive"
 version = "2.0.0"
-source = "git+https://github.com/CosmWasm/cosmwasm.git?rev=v2.0.0#336afd2e62f83ea632bb4b2f94488b228ca2e28a"
+source = "git+https://github.com/CosmWasm/cosmwasm.git?rev=f1fa4bb35a1fc8ad5f48d079c1d29e5b2a1d4018#f1fa4bb35a1fc8ad5f48d079c1d29e5b2a1d4018"
 dependencies = [
  "syn 1.0.109",
 ]
@@ -284,7 +280,7 @@ dependencies = [
 [[package]]
 name = "cosmwasm-std"
 version = "2.0.0"
-source = "git+https://github.com/CosmWasm/cosmwasm.git?rev=v2.0.0#336afd2e62f83ea632bb4b2f94488b228ca2e28a"
+source = "git+https://github.com/CosmWasm/cosmwasm.git?rev=f1fa4bb35a1fc8ad5f48d079c1d29e5b2a1d4018#f1fa4bb35a1fc8ad5f48d079c1d29e5b2a1d4018"
 dependencies = [
  "base64",
  "bech32",
@@ -305,11 +301,9 @@ dependencies = [
 [[package]]
 name = "cosmwasm-vm"
 version = "2.0.0"
-source = "git+https://github.com/CosmWasm/cosmwasm.git?rev=v2.0.0#336afd2e62f83ea632bb4b2f94488b228ca2e28a"
+source = "git+https://github.com/CosmWasm/cosmwasm.git?rev=f1fa4bb35a1fc8ad5f48d079c1d29e5b2a1d4018#f1fa4bb35a1fc8ad5f48d079c1d29e5b2a1d4018"
 dependencies = [
  "bech32",
- "bitflags 1.3.2",
- "bytecheck",
  "bytes",
  "clru",
  "cosmwasm-crypto",
@@ -323,6 +317,7 @@ dependencies = [
  "sha2 0.10.8",
  "strum",
  "thiserror",
+ "tracing",
  "wasmer",
  "wasmer-middlewares",
 ]
@@ -336,89 +331,6 @@ dependencies = [
  "libc",
 ]
 
-[[package]]
-name = "cranelift-bforest"
-version = "0.91.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2a2ab4512dfd3a6f4be184403a195f76e81a8a9f9e6c898e19d2dc3ce20e0115"
-dependencies = [
- "cranelift-entity",
-]
-
-[[package]]
-name = "cranelift-codegen"
-version = "0.91.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "98b022ed2a5913a38839dfbafe6cf135342661293b08049843362df4301261dc"
-dependencies = [
- "arrayvec",
- "bumpalo",
- "cranelift-bforest",
- "cranelift-codegen-meta",
- "cranelift-codegen-shared",
- "cranelift-egraph",
- "cranelift-entity",
- "cranelift-isle",
- "gimli 0.26.2",
- "log",
- "regalloc2",
- "smallvec",
- "target-lexicon",
-]
-
-[[package]]
-name = "cranelift-codegen-meta"
-version = "0.91.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "639307b45434ad112a98f8300c0f0ab085cbefcd767efcdef9ef19d4c0756e74"
-dependencies = [
- "cranelift-codegen-shared",
-]
-
-[[package]]
-name = "cranelift-codegen-shared"
-version = "0.91.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "278e52e29c53fcf32431ef08406c295699a70306d05a0715c5b1bf50e33a9ab7"
-
-[[package]]
-name = "cranelift-egraph"
-version = "0.91.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "624b54323b06e675293939311943ba82d323bb340468ce1889be5da7932c8d73"
-dependencies = [
- "cranelift-entity",
- "fxhash",
- "hashbrown 0.12.3",
- "indexmap 1.9.3",
- "log",
- "smallvec",
-]
-
-[[package]]
-name = "cranelift-entity"
-version = "0.91.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9a59bcbca89c3f1b70b93ab3cbba5e5e0cbf3e63dadb23c7525cb142e21a9d4c"
-
-[[package]]
-name = "cranelift-frontend"
-version = "0.91.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0d70abacb8cfef3dc8ff7e8836e9c1d70f7967dfdac824a4cd5e30223415aca6"
-dependencies = [
- "cranelift-codegen",
- "log",
- "smallvec",
- "target-lexicon",
-]
-
-[[package]]
-name = "cranelift-isle"
-version = "0.91.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "393bc73c451830ff8dbb3a07f61843d6cb41a084f9996319917c0b291ed785bb"
-
 [[package]]
 name = "crc32fast"
 version = "1.3.2"
@@ -551,6 +463,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fffa369a668c8af7dbf8b5e56c9f744fbd399949ed171606040001947de40b1c"
 dependencies = [
  "const-oid",
+ "pem-rfc7468",
  "zeroize",
 ]
 
@@ -674,6 +587,7 @@ dependencies = [
  "ff",
  "generic-array",
  "group",
+ "pem-rfc7468",
  "pkcs8",
  "rand_core 0.6.4",
  "sec1",
@@ -778,15 +692,6 @@ version = "2.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e6d5a32815ae3f33302d95fdcb2ce17862f8c65363dcfd29360480ba1001fc9c"
 
-[[package]]
-name = "fxhash"
-version = "0.2.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c31b6d751ae2c7f11320402d34e41349dd1016f8d5d45e48c4312bc8625af50c"
-dependencies = [
- "byteorder",
-]
-
 [[package]]
 name = "generic-array"
 version = "0.14.7"
@@ -1034,6 +939,15 @@ version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7843ec2de400bcbc6a6328c958dc38e5359da6e93e72e37bc5246bf1ae776389"
 
+[[package]]
+name = "num-traits"
+version = "0.2.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "da0df0e5185db44f69b44f26786fe401b6c293d1907744beaa7fa62b2e5a517a"
+dependencies = [
+ "autocfg",
+]
+
 [[package]]
 name = "object"
 version = "0.32.2"
@@ -1061,6 +975,18 @@ version = "6.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e2355d85b9a3786f481747ced0e0ff2ba35213a1f9bd406ed906554d7af805a1"
 
+[[package]]
+name = "p256"
+version = "0.13.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c9863ad85fa8f4460f9c48cb909d38a0d689dba1f6f6988a5e3e0d31071bcd4b"
+dependencies = [
+ "ecdsa",
+ "elliptic-curve",
+ "primeorder",
+ "sha2 0.10.8",
+]
+
 [[package]]
 name = "parking_lot_core"
 version = "0.9.9"
@@ -1074,6 +1000,21 @@ dependencies = [
  "windows-targets 0.48.5",
 ]
 
+[[package]]
+name = "paste"
+version = "1.0.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "de3145af08024dea9fa9914f381a17b8fc6034dfb00f3a84013f7ff43f29ed4c"
+
+[[package]]
+name = "pem-rfc7468"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "88b39c9bfcfc231068454382784bb460aae594343fb030d46e9f50a645418412"
+dependencies = [
+ "base64ct",
+]
+
 [[package]]
 name = "pin-project-lite"
 version = "0.2.13"
@@ -1096,6 +1037,15 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "439ee305def115ba05938db6eb1644ff94165c5ab5e9420d1c1bcedbba909391"
 
+[[package]]
+name = "primeorder"
+version = "0.13.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "353e1ca18966c16d9deb1c69278edbc5f194139612772bd9537af60ac231e1e6"
+dependencies = [
+ "elliptic-curve",
+]
+
 [[package]]
 name = "proc-macro-error"
 version = "1.0.4"
@@ -1208,18 +1158,6 @@ dependencies = [
  "bitflags 1.3.2",
 ]
 
-[[package]]
-name = "regalloc2"
-version = "0.5.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "300d4fbfb40c1c66a78ba3ddd41c1110247cf52f97b87d0f2fc9209bd49b030c"
-dependencies = [
- "fxhash",
- "log",
- "slice-group-by",
- "smallvec",
-]
-
 [[package]]
 name = "region"
 version = "3.0.0"
@@ -1281,6 +1219,28 @@ dependencies = [
  "syn 1.0.109",
 ]
 
+[[package]]
+name = "rmp"
+version = "0.8.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7f9860a6cc38ed1da53456442089b4dfa35e7cedaa326df63017af88385e6b20"
+dependencies = [
+ "byteorder",
+ "num-traits",
+ "paste",
+]
+
+[[package]]
+name = "rmp-serde"
+version = "1.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bffea85eea980d8a74453e5d02a8d93028f3c34725de143085a844ebe953258a"
+dependencies = [
+ "byteorder",
+ "rmp",
+ "serde",
+]
+
 [[package]]
 name = "rustc-demangle"
 version = "0.1.23"
@@ -1486,12 +1446,6 @@ version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f27f6278552951f1f2b8cf9da965d10969b2efdea95a6ec47987ab46edfe263a"
 
-[[package]]
-name = "slice-group-by"
-version = "0.3.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "826167069c09b99d56f31e9ae5c99049e932a98c9dc2dac47645b08dbbf76ba7"
-
 [[package]]
 name = "smallvec"
 version = "1.13.1"
@@ -1825,7 +1779,6 @@ dependencies = [
  "tracing",
  "wasm-bindgen",
  "wasmer-compiler",
- "wasmer-compiler-cranelift",
  "wasmer-compiler-singlepass",
  "wasmer-derive",
  "wasmer-types",
@@ -1860,25 +1813,6 @@ dependencies = [
  "winapi",
 ]
 
-[[package]]
-name = "wasmer-compiler-cranelift"
-version = "4.2.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "102e2c5bacac69495c4025767e2fa26797ffb27f242dccb7cf57d9cefd944386"
-dependencies = [
- "cranelift-codegen",
- "cranelift-entity",
- "cranelift-frontend",
- "gimli 0.26.2",
- "more-asserts",
- "rayon",
- "smallvec",
- "target-lexicon",
- "tracing",
- "wasmer-compiler",
- "wasmer-types",
-]
-
 [[package]]
 name = "wasmer-compiler-singlepass"
 version = "4.2.6"
@@ -1985,6 +1919,7 @@ dependencies = [
  "cosmwasm-vm",
  "errno",
  "hex",
+ "rmp-serde",
  "serde",
  "serde_json",
  "tempfile",
diff --git a/libwasmvm/Cargo.toml b/libwasmvm/Cargo.toml
index 0abfcd89e..1d843f405 100644
--- a/libwasmvm/Cargo.toml
+++ b/libwasmvm/Cargo.toml
@@ -26,9 +26,13 @@ default = []
 backtraces = []
 
 [dependencies]
-cosmwasm-std = { git = "https://github.com/CosmWasm/cosmwasm.git", rev = "v2.0.0", features = ["staking", "stargate", "iterator"] }
-cosmwasm-vm = { git = "https://github.com/CosmWasm/cosmwasm.git", rev = "v2.0.0", features = ["staking", "stargate", "iterator"] }
+#cosmwasm-std = { git = "https://github.com/CosmWasm/cosmwasm.git", rev = "v2.0.0", features = ["staking", "stargate", "iterator"] }
+#cosmwasm-vm = { git = "https://github.com/CosmWasm/cosmwasm.git", rev = "v2.0.0", features = ["staking", "stargate", "iterator"] }
+cosmwasm-std = { git = "https://github.com/CosmWasm/cosmwasm.git", rev = "f1fa4bb35a1fc8ad5f48d079c1d29e5b2a1d4018", features = ["staking", "stargate", "iterator"] }
+cosmwasm-vm = { git = "https://github.com/CosmWasm/cosmwasm.git", rev = "f1fa4bb35a1fc8ad5f48d079c1d29e5b2a1d4018", features = ["staking", "stargate", "iterator"] }
 errno = "0.3.8"
+rmp-serde = "1.1.2"
+serde = { version = "1.0.103", features = ["derive"] }
 serde_json = "1.0.91"
 thiserror = "1.0.38"
 hex = "0.4.3"
diff --git a/libwasmvm/bindings.h b/libwasmvm/bindings.h
index 2d2835f5f..696a45d02 100644
--- a/libwasmvm/bindings.h
+++ b/libwasmvm/bindings.h
@@ -426,6 +426,8 @@ struct AnalysisReport analyze_code(struct cache_t *cache,
 
 struct Metrics get_metrics(struct cache_t *cache, struct UnmanagedVector *error_msg);
 
+struct UnmanagedVector get_pinned_metrics(struct cache_t *cache, struct UnmanagedVector *error_msg);
+
 /**
  * frees a cache reference
  *
diff --git a/libwasmvm/src/cache.rs b/libwasmvm/src/cache.rs
index 9b21dbd9b..e5e7f9542 100644
--- a/libwasmvm/src/cache.rs
+++ b/libwasmvm/src/cache.rs
@@ -5,6 +5,7 @@ use std::str::from_utf8;
 
 use cosmwasm_std::Checksum;
 use cosmwasm_vm::{capabilities_from_csv, Cache, CacheOptions, Size};
+use serde::Serialize;
 
 use crate::api::GoApi;
 use crate::args::{AVAILABLE_CAPABILITIES_ARG, CACHE_ARG, CHECKSUM_ARG, DATA_DIR_ARG, WASM_ARG};
@@ -384,6 +385,64 @@ fn do_get_metrics(cache: &mut Cache<GoApi, GoStorage, GoQuerier>) -> Result<Metr
     Ok(cache.metrics().into())
 }
 
+#[derive(Serialize)]
+struct PerModuleMetrics {
+    hits: u32,
+    size: usize,
+}
+
+impl From<cosmwasm_vm::PerModuleMetrics> for PerModuleMetrics {
+    fn from(value: cosmwasm_vm::PerModuleMetrics) -> Self {
+        Self {
+            hits: value.hits,
+            size: value.size,
+        }
+    }
+}
+
+#[derive(Serialize)]
+struct PinnedMetrics {
+    per_module: Vec<(Checksum, PerModuleMetrics)>,
+}
+
+impl From<cosmwasm_vm::PinnedMetrics> for PinnedMetrics {
+    fn from(value: cosmwasm_vm::PinnedMetrics) -> Self {
+        Self {
+            per_module: value
+                .per_module
+                .iter()
+                .cloned()
+                .map(|(checksum, metrics)| (checksum, metrics.into()))
+                .collect(),
+        }
+    }
+}
+
+#[no_mangle]
+pub extern "C" fn get_pinned_metrics(
+    cache: *mut cache_t,
+    error_msg: Option<&mut UnmanagedVector>,
+) -> UnmanagedVector {
+    let r = match to_cache(cache) {
+        Some(c) => {
+            catch_unwind(AssertUnwindSafe(move || do_get_pinned_metrics(c))).unwrap_or_else(|err| {
+                eprintln!("Panic in do_get_pinned_metrics: {err:?}");
+                Err(Error::panic())
+            })
+        }
+        None => Err(Error::unset_arg(CACHE_ARG)),
+    };
+    handle_c_error_default(r, error_msg)
+}
+
+fn do_get_pinned_metrics(
+    cache: &mut Cache<GoApi, GoStorage, GoQuerier>,
+) -> Result<UnmanagedVector, Error> {
+    let pinned_metrics = PinnedMetrics::from(cache.pinned_metrics());
+    let edgerunner = rmp_serde::to_vec_named(&pinned_metrics)?;
+    Ok(UnmanagedVector::new(Some(edgerunner)))
+}
+
 /// frees a cache reference
 ///
 /// # Safety
diff --git a/libwasmvm/src/error/rust.rs b/libwasmvm/src/error/rust.rs
index cb0656dcc..a6682d667 100644
--- a/libwasmvm/src/error/rust.rs
+++ b/libwasmvm/src/error/rust.rs
@@ -22,6 +22,12 @@ pub enum RustError {
         #[cfg(feature = "backtraces")]
         backtrace: Backtrace,
     },
+    #[error("Cannot serialize to MessagePack: {msg}")]
+    MessagePack {
+        msg: String,
+        #[cfg(feature = "backtraces")]
+        backtrace: Backtrace,
+    },
     #[error("Ran out of gas")]
     OutOfGas {
         #[cfg(feature = "backtraces")]
@@ -68,6 +74,14 @@ impl RustError {
         }
     }
 
+    pub fn message_pack<S: ToString>(msg: S) -> Self {
+        RustError::MessagePack {
+            msg: msg.to_string(),
+            #[cfg(feature = "backtraces")]
+            backtrace: Backtrace::capture(),
+        }
+    }
+
     pub fn panic() -> Self {
         RustError::Panic {
             #[cfg(feature = "backtraces")]
@@ -121,6 +135,12 @@ impl From<ChecksumError> for RustError {
     }
 }
 
+impl From<rmp_serde::encode::Error> for RustError {
+    fn from(source: rmp_serde::encode::Error) -> Self {
+        RustError::message_pack(source)
+    }
+}
+
 impl From<std::str::Utf8Error> for RustError {
     fn from(source: std::str::Utf8Error) -> Self {
         RustError::invalid_utf8(source)
diff --git a/types/types.go b/types/types.go
index a8cca6dd6..5eea2fe83 100644
--- a/types/types.go
+++ b/types/types.go
@@ -184,6 +184,15 @@ type Metrics struct {
 	SizeMemoryCache uint64
 }
 
+type PerModuleMetrics struct {
+	Hits uint32
+	Size uint64
+}
+
+type PinnedMetrics struct {
+	PerModule PerModuleMetrics `json:"per_module"`
+}
+
 // Array is a wrapper around a slice that ensures that we get "[]" JSON for nil values.
 // When unmarshaling, we get an empty slice for "[]" and "null".
 //