fix(deps): update aws-smithy-json to 0.62.7 and raise the minimum Rust version to 1.91.1

.agents/skills/extenddb/references/setup/02-dependency-checks.md

@@ -8,7 +8,7 @@ This file lists the dependency checks the `extenddb-setup` skill runs before pro
 
 | Dependency | Check command | Minimum version | Rationale |
 |---|---|---|---|
-| Rust toolchain | `cargo --version` and `rustc --version` | 1.88 | extenddb is a Rust workspace; older toolchains fail `cargo build --release`. |
+| Rust toolchain | `cargo --version` and `rustc --version` | 1.91.1 | extenddb is a Rust workspace; older toolchains fail `cargo build --release`. |
 | PostgreSQL client | `psql --version` | 14 | extenddb speaks the Postgres protocol at init and runtime; older clients may lack required features. |
 | PostgreSQL server readiness | `pg_isready` | n/a (server-side check) | Confirms the server is reachable before `extenddb init`. |
 | Python 3 | `python3 --version` | 3.10 | Required by the sample apps and the docs build pipeline. |
@@ -29,7 +29,7 @@ If `which cargo` exits nonzero, Rust is not installed. Install:
 - Linux (Fedora/RHEL): `curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh`
 - macOS: `brew install rustup-init && rustup-init`
 
-If Rust is installed but `rustc --version` reports older than 1.88:
+If Rust is installed but `rustc --version` reports older than 1.91.1:
 
 ```bash
 rustup update
@@ -84,7 +84,7 @@ If `python3 --version` reports older than 3.10, upgrade via the same package man
 
 ## Version parsing
 
-`rustc --version` prints `rustc 1.88.0 (abcdef0 2025-01-01)`. Extract the version field with `awk`:
+`rustc --version` prints `rustc 1.91.1 (abcdef0 2025-01-01)`. Extract the version field with `awk`:
 
 ```bash
 rustc --version | awk '{print $2}'
@@ -96,11 +96,11 @@ rustc --version | awk '{print $2}'
 psql --version | awk '{print $3}'
 ```
 
-Compare the extracted version against the minimum (1.88 for Rust, 14 for Postgres) by splitting on `.` and comparing numerically. For skill-level checks, a string prefix comparison (`[[ "$PG_VER" < "14" ]]`) is adequate because major versions are single or double digits.
+Compare the extracted version against the minimum (1.91.1 for Rust, 14 for Postgres) by splitting on `.` and comparing numerically. For skill-level checks, a string prefix comparison (`[[ "$PG_VER" < "14" ]]`) is adequate because major versions are single or double digits.
 
 ## Rust version upgrade path
 
-If Rust is installed via rustup and `rustc --version` reports older than 1.88, the fix is:
+If Rust is installed via rustup and `rustc --version` reports older than 1.91.1, the fix is:
 
 ```bash
 rustup update

.agents/skills/extenddb/references/setup/03-build-stage.md

@@ -59,4 +59,4 @@ This should print the extenddb version string. If it does not, the build failed
 cargo build --release --verbose
 ```
 
-Common causes of silent build failure are a missing system library (for example, `libpq-dev` or `openssl-dev` on Linux), a Rust toolchain older than 1.88, or a disk full condition under `target/`. The verbose output names the failing crate and the missing dependency.
+Common causes of silent build failure are a missing system library (for example, `libpq-dev` or `openssl-dev` on Linux), a Rust toolchain older than 1.91.1, or a disk full condition under `target/`. The verbose output names the failing crate and the missing dependency.

.cargo/config.toml

@@ -3,7 +3,7 @@
 
 [resolver]
 # Prefer dependency versions whose declared rust-version fits the workspace
-# rust-version (1.88, tested in CI), so `cargo update` on a newer toolchain
-# does not pull in crates that no longer build on 1.88. Only applies when a
+# rust-version (1.91.1, tested in CI), so `cargo update` on a newer toolchain
+# does not pull in crates that no longer build on 1.91.1. Only applies when a
 # newer version would be incompatible; everything else updates as usual.
 incompatible-rust-versions = "fallback"

.github/workflows/test.yml

@@ -27,7 +27,7 @@ jobs:
     timeout-minutes: 15
     strategy:
       matrix:
-        toolchain: [stable, "1.88.0"]
+        toolchain: [stable, "1.91.1"]
     steps:
       - uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4.4.0
       - uses: dtolnay/rust-toolchain@683b588c487a69d01f6c6ddf40f036ff682cc2c8 # master

AGENTS.md

@@ -9,7 +9,7 @@ License. ExtendDB is a clean-room implementation of the DynamoDB wire protocol,
 by AWS engineers. It is not a fork of DynamoDB and contains no DynamoDB source code. ExtendDB speaks the DynamoDB wire
 protocol: any AWS SDK, CLI, or tool that works with DynamoDB works with ExtendDB, unchanged.
 
-- **Language:** Rust (edition 2024, MSRV 1.88+)
+- **Language:** Rust (edition 2024, MSRV 1.91.1+)
 - **Storage backends:** PostgreSQL 14+ (default), SQLite (bundled, no server or client install required; feature flag `sqlite`, also `sqlite-memory` for dev and CI), MongoDB 7.0+ (feature flag `mongodb`), Cassandra 4.1+ (experimental; feature flag `cassandra`). One backend per binary, selected by mutually exclusive Cargo features.
 - **Architecture:** Async (tokio), trait-based storage abstraction
 - **Authentication:** Mandatory SigV4 with built-in IAM (users, groups, roles, policies)
@@ -97,7 +97,7 @@ extenddb (bin)
 
 ### Prerequisites
 
-- Rust 1.88+ (`rustup update`)
+- Rust 1.91.1+ (`rustup update`)
 - Storage backend (one of):
   - PostgreSQL 14+ running locally (see `docs/local-postgres-setup.md`)
   - SQLite (embedded; nothing to install)
@@ -415,7 +415,7 @@ python3 docs/build-docs.py
 ## Code Style and Conventions
 
 - **Rust edition:** 2024
-- **MSRV:** 1.88
+- **MSRV:** 1.91.1
 - **Async:** tokio, no `#[async_trait]` (use RPITIT)
 - **Error handling:** `thiserror` for library errors, `anyhow` for application errors
 - **Serialization:** `serde` + `serde_json`

CONTRIBUTING.md

@@ -6,7 +6,7 @@ Thank you for your interest in contributing to ExtendDB!
 
 ### Prerequisites
 
-- Rust 1.88+ (stable)
+- Rust 1.91.1+ (stable)
 - PostgreSQL 14+
 - Python 3.10+ (for integration tests)
 

Cargo.toml

@@ -22,7 +22,7 @@ members = [
 [workspace.package]
 version = "0.1.14"
 edition = "2024"
-rust-version = "1.88"
+rust-version = "1.91.1"
 license = "Apache-2.0"
 
 [workspace.dependencies]
@@ -89,14 +89,13 @@ bson = "2.13"
 dashmap = "6"
 
 # Backup store
-# Exact pins: the aws-sdk crates release in lockstep, and these are the newest
-# versions whose declared minimum supported rustc fits the workspace
-# rust-version (1.88); later releases require a newer compiler. Their
-# transitive aws-* and aws-smithy-* crates are held in Cargo.lock at the
-# newest versions that build on 1.88 (set with
-# `cargo +1.88.0 update <crate>@<version> --precise <older>`). The resolver
+# Exact pins: the aws-sdk crates release in lockstep, and each of these
+# versions declares a minimum supported rustc at or below the workspace
+# rust-version (1.91.1). Their transitive aws-* and aws-smithy-* crates are
+# held in Cargo.lock at versions that build on 1.91.1 (set with
+# `cargo +1.91.1 update <crate>@<version> --precise <older>`). The resolver
 # fallback in .cargo/config.toml keeps a plain `cargo update` from moving
-# them past that, and the 1.88 leg of .github/workflows/test.yml fails if
+# them past that, and the 1.91.1 leg of .github/workflows/test.yml fails if
 # they drift. The feature set is that of tests/rust/Cargo.toml plus `sso` on
 # aws-config, so a server whose credentials come from an SSO profile
 # (`sso_session` in the shared config) can reach the backup bucket.

Dockerfile

@@ -2,7 +2,7 @@
 
 # The runtime base is explicitly approved for this public OSS distribution.
 # Keep both references digest-pinned and update them only through reviewed CRs.
-FROM public.ecr.aws/docker/library/rust:1.88-bookworm@sha256:af306cfa71d987911a781c37b59d7d67d934f49684058f96cf72079c3626bfe0 AS build
+FROM public.ecr.aws/docker/library/rust:1.91.1-bookworm@sha256:c1e5f19e773b7878c3f7a805dd00a495e747acbdc76fb2337a4ebf0418896b33 AS build
 ARG VCS_REF
 ARG BUILD_DATE
 WORKDIR /src

Dockerfile.cassandra

@@ -4,7 +4,7 @@
 # external service: use an Apache Cassandra 4.1+ cluster you operate, or the
 # optional docker-compose.cassandra.yml reference stack for local development.
 
-FROM public.ecr.aws/docker/library/rust:1.88-bookworm@sha256:af306cfa71d987911a781c37b59d7d67d934f49684058f96cf72079c3626bfe0 AS build
+FROM public.ecr.aws/docker/library/rust:1.91.1-bookworm@sha256:c1e5f19e773b7878c3f7a805dd00a495e747acbdc76fb2337a4ebf0418896b33 AS build
 ARG VCS_REF
 ARG BUILD_DATE
 WORKDIR /src

Dockerfile.dev

@@ -14,7 +14,7 @@
 #     production binaries keep readable panic backtraces.
 #   * distroless runtime: no shell, no package manager, no setuid binaries.
 
-FROM public.ecr.aws/docker/library/rust:1.88-bookworm@sha256:af306cfa71d987911a781c37b59d7d67d934f49684058f96cf72079c3626bfe0 AS build
+FROM public.ecr.aws/docker/library/rust:1.91.1-bookworm@sha256:c1e5f19e773b7878c3f7a805dd00a495e747acbdc76fb2337a4ebf0418896b33 AS build
 ARG VCS_REF
 ARG BUILD_DATE
 WORKDIR /src

Dockerfile.mongodb

@@ -4,7 +4,7 @@
 # external service: use MongoDB Atlas, a managed replica set, or the optional
 # docker-compose.mongodb.yml reference stack.
 
-FROM public.ecr.aws/docker/library/rust:1.88-bookworm@sha256:af306cfa71d987911a781c37b59d7d67d934f49684058f96cf72079c3626bfe0 AS build
+FROM public.ecr.aws/docker/library/rust:1.91.1-bookworm@sha256:c1e5f19e773b7878c3f7a805dd00a495e747acbdc76fb2337a4ebf0418896b33 AS build
 ARG VCS_REF
 ARG BUILD_DATE
 WORKDIR /src

README.md

@@ -53,7 +53,7 @@ scripts/install-macos.sh   # macOS
 
 ## Prerequisites
 
-- Rust 1.88+ (`rustup update`)
+- Rust 1.91.1+ (`rustup update`)
 - Python 3.10+ (for test suites and documentation)
 - A storage backend:
   - PostgreSQL 14+ (see `docs/local-postgres-setup.md`)

crates/cache/src/swr.rs

@@ -37,7 +37,7 @@ pub struct SwrCacheConfig {
 impl Default for SwrCacheConfig {
     fn default() -> Self {
         Self {
-            ttl: Duration::from_secs(60),
+            ttl: Duration::from_mins(1),
             soft_ttl: Duration::from_secs(30),
             negative_ttl: Duration::from_secs(5),
             max_entries: 10_000,

crates/cache/src/tests.rs

@@ -365,7 +365,7 @@ async fn refresh_failure_does_not_evict_stale_entry() {
 async fn lru_eviction_caps_size_at_max_entries() {
     let (loader, _) = CountingLoader::new();
     let config = SwrCacheConfig {
-        ttl: Duration::from_secs(60),
+        ttl: Duration::from_mins(1),
         soft_ttl: Duration::from_secs(30),
         negative_ttl: Duration::from_secs(5),
         max_entries: 4,
@@ -402,7 +402,7 @@ async fn invalidate_all_clears_every_entry() {
 #[tokio::test(flavor = "multi_thread", worker_threads = 4)]
 async fn config_default_has_expected_values() {
     let cfg = SwrCacheConfig::default();
-    assert_eq!(cfg.ttl, Duration::from_secs(60));
+    assert_eq!(cfg.ttl, Duration::from_mins(1));
     assert_eq!(cfg.soft_ttl, Duration::from_secs(30));
     assert_eq!(cfg.negative_ttl, Duration::from_secs(5));
     assert_eq!(cfg.max_entries, 10_000);

crates/storage-cassandra/src/migrations/backend.rs

@@ -212,7 +212,7 @@ pub(crate) fn stopped(left: Option<&std::sync::atomic::AtomicUsize>) -> bool {
         return false;
     };
     // A compare-exchange loop: `fetch_update` is deprecated on current
-    // stable and its replacement does not exist on 1.88.
+    // stable and its replacement does not exist on 1.91.1.
     let mut n = left.load(Ordering::SeqCst);
     loop {
         let Some(next) = n.checked_sub(1) else {

crates/storage-mongodb/src/migrations/guarded.rs

@@ -45,7 +45,7 @@ pub(crate) struct LeasedManagementStore {
 pub(crate) fn stopped(left: Option<&std::sync::atomic::AtomicUsize>) -> bool {
     use std::sync::atomic::Ordering;
     // A compare-exchange loop: `fetch_update` is deprecated on current
-    // stable and its replacement does not exist on 1.88.
+    // stable and its replacement does not exist on 1.91.1.
     let Some(left) = left else {
         return false;
     };

docs/design/15-backup-restore.md

@@ -482,7 +482,7 @@ Phase 3, later (v1.x):
 
 - Backups are asynchronous where the current implementation is synchronous; clients that assumed AVAILABLE on return must poll, which is what they do against DynamoDB.
 - Long snapshot transactions on PostgreSQL delay vacuum for the backup duration; MongoDB snapshot windows bound backup duration by server configuration.
-- A new dependency on the AWS S3 SDK (its lock entries pinned to the versions that build on the workspace's 1.88 toolchain, which also holds `crc` at 3.3.0 for the server; the licence notices change when PR 7 links the crate into the server) and an S3 mock in CI.
+- A new dependency on the AWS S3 SDK (its lock entries pinned to the versions that build on the workspace's 1.91.1 toolchain, which also holds `crc` at 3.3.0 for the server; the licence notices change when PR 7 links the crate into the server) and an S3 mock in CI.
 - A restore from an S3 store spools the whole compressed backup to local disk before loading any of it.
 - One core at full utilization for the duration of a backup on compression; `max_concurrent_jobs` and `spawn_blocking` keep it off the request threads but do not make it free on a 2-vCPU host.
 - Two code paths for one release while legacy backups remain readable.

docs/getting-started.md

@@ -41,7 +41,7 @@ See [Local Development with Docker Compose](local-dev-docker-compose.md).
   - SQLite (embedded; nothing to install)
   - MongoDB 7.0+ with replica set (see `docs/local-mongodb-setup.md`)
   - Cassandra 4.1+ running locally (see `docs/cassandra-setup.md`)
-- Rust toolchain (1.88+)
+- Rust toolchain (1.91.1+)
 - AWS CLI v2 (for testing)
 - Python 3.10+ with virtual environment (see [Python Environment Setup](../README.md#python-environment-setup) in the README)
 

docs/manuals/04-quickstart-setup-guide.md

@@ -9,7 +9,7 @@ This section gets you from zero to a working extenddb instance as fast as possib
 ### Prerequisites
 
 - PostgreSQL 14+ running locally
-- Rust toolchain 1.88+
+- Rust toolchain 1.91.1+
 - AWS CLI v2
 
 ### Steps

docs/manuals/08-install-linux.md

@@ -26,7 +26,7 @@ If you prefer to run each step yourself, follow the sections below.
 
 ## Prerequisites
 
-- Rust 1.88+ (`rustup update`)
+- Rust 1.91.1+ (`rustup update`)
 - PostgreSQL 14+
 - Python 3.10+ (for test suites)
 - AWS CLI v2 (for testing)

docs/manuals/09-install-macos.md

@@ -26,7 +26,7 @@ If you prefer to run each step yourself, follow the sections below.
 
 ## Prerequisites
 
-- Rust 1.88+ (`rustup update`)
+- Rust 1.91.1+ (`rustup update`)
 - PostgreSQL 14+ via Homebrew (`brew install postgresql@17`)
 - Python 3.10+ (for test suites)
 - AWS CLI v2 (for testing)