 crash on WiFi Aware stalling and Ditto being re-created (#14423)

 Setting the minimum log level to WARN or ERROR will now correctly filter out very early logger initialization messages. (#14451)

 A bug that could prevent an attachment created with the same data on multiple peers from syncing. (#14481)

 Crash in WiFi Aware when registering network publisher callback (#14013)

 system parameter can be used to disable replicating presence information to other peers in the mesh, reducing network overhead. Use 

 with guidance from the Ditto Customer Experience team. (#14128)

When failing to load document data sync (replication) metadata, Ditto now attempts to clear and regenerate the metadata. This is a behavior change where previously Ditto would fail to start. This serves to prevent problems after SDK version downgrades. (#13111)

A rare issue where attachments may not be transferred between two peers.(#14158)

On-disk logs are more robust in situations with unexpected Ditto shutdown. (#13723)

The version 4.8.0 SDK release update brings a substantial number of improvements and new features designed to enhance your development experience and provide even more powerful tools for building robust, real-time applications.

, which exports collected logs to a compressed and JSON-encoded file on the local file system. Logs returned through this method are at DEBUG log level. This new API can be used to do forensic log gathering on a device. Logs are always collected and restricted to a fixed specific size limit to ensure they don't grow endlessly. Once the size limit has reached new logs replace the oldest logs. #11961

, making the API much easier to call from Java. #12770

 to include a recommendation for performance improvement. #13098

Performance of initial sync when bootstrapping a new peer can be improved by calling 

. 

Only do this when all peers in the mesh are known to be running Ditto v4 or higher.

 to add information about how the property behaves over the lifecycle of the 

. By providing a hint you can better track the source of blocked write transactions #7110

 Android Wifi Aware internal logic to avoid duplicate attempts to create the network and speed up time to successful connection #12458

 Improve Android WifiAware stability by actively terminate when the application goes into the background and resume when the application comes back to the foreground #12804

 Improve staleness detection in Android Wifi Aware leading to a more reliable connection. #12866

 API docs no longer include unintentially exposed protected members. #13200

(Linux&Android) Increased mDNS multicast TTL from 1 to 255 to allow for cross-VLAN announcements #13590

 Slow or blocked write transactions now log hints showing the waiting and blocking transactions #7110

 The SDK will no longer crash when it observes malformed mDNS traffic #12396

 The SDK will no longer crash when multiple threads call 

, always return 0 going forward. Query Overlap Groups was an experiemental feature that has been removed after it was determined this would not support production scenarios. #13215

. These are internal memory management APIs that were unintentially exposed and can cause memory leaks or crashes if used #12617

setPriority(_:forQueryOverlapGroup:ditto:)

 The Logging output format for Ditto SDKs has been changed in 4.8.0 as part of our process to improve readablility and observability across the Ditto platform. Customers should validate the new data format in their existing data ingestion pipelines.

YYYY-MM-DDTHH:MM:SS.ssssss LEVEL TARGET: MESSAGE {field1=value1, field2=value2, ...}

[INFO] 2024-08-02T10:25:39.981Z: AuthClient: using cached SiteId; site_id = 16248337916605943930

2024-08-02T11:32:25.905562+01:00  INFO ditto_init:new_auth_client: ditto_auth: using cached SiteId site_id=16248337916605943930

 DQL support for inline object and array literal creation #12312

 DQL INSERT statements support inlining the construction of an object #12761

 Remote query capability allows Big Peer to execute read-only queries on Small Peers. Usagne currently internal to Ditto Customer Experience team members #12268

 Diagnostics are now provided when collecting Small Peer Info on-disk logs #12080

 output version, sdk and build information on startup for easier debugging #12845

 Introduced new internal capabilities ensure a large data payload (e.g. a large attachment file) cannot use all the bandwidth and prevent other data from being synced.

 mDNS transport can now be configured with a static port for the TCP server using the 

 New logging format that includes detailed information #10794

 The Ditto logger is now more verbose by default, with a minimum log level of 

 small peer info collection is now enabled by default and its default sync scope is now BigPeerOnly #12709 (Device dashboard will populate information automatically)

) Multihop connections are formed more efficiently, e.g., for Ditto Bus. This is an incompatible protocol change from previous versions #12108, #12623

 Improve performance by avoiding deserializing the entire Document if only part of it is required #10887

 Attachments now sync independently of documents, improving rainbow connection efficiency #11156

 Updating several depdencies for security patching (Patch multiple old packages #12087)

 How network OS capabilities are internally linked into the library to allow for more relaiable and reusable internal logic #12362

 method to include information about its interaction with sync subscriptions #12365

 Default to creating backup Bluetooth connections when there is an existing WiFi connection (Default mesh_chooser_avoid_redundant_bluetooth to false #13398)

 console logging will now output to STDERR instead of STDOUT ([logs] logging now outputs to STDERR instead of STDOUT #13477)

Bytes and Arrays not being always comparable in the legacy query language #10887

 Legacy query language casting counters and maps with tombstones to the wrong boolean value #10887

 Lowered the log level of a few SQLite3 notices that were being unnecessarily logged as warnings #12032

 A crash that can occur if a DQL query contains a multi-byte character #12324

 An issue with the transports multiplexer that could lead to a hung process. This occured when dealing with large messages spanning multiple chunks (>64KB)  #12428

 A rare edge case that could slow down data sync betten peers #12527

 Frequent subscription changes along with eviction calls could cause failure to converge on data leading to inconsistent data state #11431

 Memory leak in third party library used for peer-internal messaging #12895

 Transport inactive connection tracking no longer stores identifiers indefinitely. This could lead to a slow growth in memory consumption for long lived applications (~ 1MB/day on transports with high rate, unreliable discovery - such as BLE) #13147

 Unexpected failures to obtain a certificate for peer-to-peer sync are now logged at 

) Ditto no longer supports the experimental Query Overlap Groups feature and support has been removed. This experimental feature has been removed after running a determining a lack of feasability in production scenarios. The team is iterating and plan on interoducing improved capabilitites.  #13075

Swift

Kotlin

linux_aarm_supported_version

android_supported_version

ipados_supported_version

ios_supported_version

windows_x64_supported_version

mac_supported_version

linux_x64_supported_version

JavaScript | Web and Node.js

Where you get expert information for building cloud‑optional apps using Ditto.

Kotlin

4.8.2 Version Release

4.8.2 Kotlin/Java Specific Changes

4.8.1 Version Release

4.8.1 Kotlin/Java Specific Changes

4.8.0 Version Release