Litedb checkpoint. Added a thread specifically for calling 'Checkpoint ()'.
Dispose() before finish (to ensure checkpoint runs) Try do this in your environment to check if could be some like this. Exception: LiteDB ENSURE: request page must be less or equals lastest page in data file at LiteDB. Does not affect the behavior of the datafile. LiteDB". If you're dealing with large amounts of data and experience performance loss or large log files, just run a checkpoint every once in a while. 1 Describe the bug marking property as [NotMapped] do nothing Code to Reproduce [NotMapped] public bool IsSelected { get 378 lines (321 loc) · 8. stream. Checkpoint() at LiteDB. Adding a Form_Load event handler, then declare variables as shown below. This class will serve as the default repository, in it we'll store all of our posts for now and maybe some more collections later. 8 Xamarin Forms 4. You user decide to keep a single instance will get betters benefits about performance (as keeping pages in cache and keeping datafile (and journal) opened, and avoid first v1 problem about read inconsistent data when using same instance). Should each process share the same LiteDatabase instance (and/or collections), or should e . liteDB is the perfect tool for small projects where performance is of less concern than ease of use and clean, Pythonic APIs. Those examples are more like demo projects though, was not able to find a real project. After updating LiteDB to 4. Engine { public partial class LiteEngine { /// <summary> /// Implement upsert command to documents in a collection. The value proposition. You signed in with another tab or window. BsonExpression s can either be used natively (there is an implicit conversion between string and BsonExpression ) or by mapping a lambda expression (methods that take a lambda expression do this automatically). Dispose() at the end (possibly with a using block), but we realize it is not always possible to construct you app this way. x. Mar 13, 2020 · LiteDB multithreaded stress test application. May 8, 2021 · System. Update(T entity) The application would recover after this and continue working just fine, however, it seems the lock timeouts became more prevalent, and then we started seeing the max at LiteDB. " v5 was released in late Jan 2020. Update(String collection, IEnumerable1 docs) at LiteDB. Old: LiteDB is a simple, fast and lightweight embedded . I am randomly getting exceptions like this (not always mind you, just once every few thousand lookups or so): System. (REQUIRED) LiteDB: 5. LiteQueryable`1. 后来排查到是实体类中没有添加Id 属性（这LiteDB库作者真他妈的二百五，强制要加id）：. Studio admin tool. Exception: LiteDB ENSURE: page type must be collection page at LiteDB. 9 Jun 20, 2018 · Loading only "DataPage" and knowing collection ID will be possible re-generate all database with no index page required. <ToDocuments>d__26. ldb"); for (var i = 0; i < 5; i++) testDb. SQL offers a wide range of powerful features Quickstart Guide. Constants; namespace LiteDB { /// <summary> /// Internal class to parse and execute sql-like commands /// </summary> internal partial class SqlParser { private readonly ILiteEngine LiteDB is a simple, fast and lightweight embedded . Changes to CheckpointSize change nothing. GetPage[T Oct 1, 2019 · Im implementing the LiteDB in a very small project (. Let's open up the file and create a new repo Pragmas. CRC for all pages: this last procedure will write (on last 4 bytes of all pages) a CRC checksum about data in WAL file. Describe the solution you'd like. 0 (latest version). Insert(new Event() Feb 17, 2021 · Hi @nabeelio, the log file are deleted when database are closed (when LiteDB can execute checkpoint operation). The expected behavior is that the insert of a high number of records does not corrupt the database. 2. Calls update on all documents, /// then any documents not updated are then attempted to insert. 7. After this command, log file are deleted (or set to 0). NET 4. LiteEngine. Overview. Oct 2, 2017 · we had the same problem with an object in R80. 1 on invoking REBUILD (and studio kind of crashes on closing) Describe the bug. 4 days ago · The CHECKPOINT statement synchronizes data in the write-ahead log (WAL) to the database data file. Utils; using System; using System. TransactionService. Checkpoint command override datafile with log file. Update(BsonValue id, T document) LiteDB stores data as documents, which are JSON-like objects containing key-value pairs. MemoryStream stream = new MemoryStream(); Stream dest = File. Insert(),calling LiteDatabase. When creating a Checkpoint manually everything freezes. LiteDB is a serverless database delivered in a single small DLL (< 450kb) fully written in . Jul 24, 2019 · When creating a test database in version 5 (commit 0eb8940) and inserting 100,000 documents (approx 150 bytes each when represented using JSON), the resulting test. Engine { /// <summary> /// A public class that take care of all engine data LiteDB - A . Data recovery after write failure (WAL log file) Aug 8, 2020 · LiteDB 5. ctor(PageBuffer buffer) at LiteDB. 0). LiteDatabase. 运行修改数据后：. AutoTransaction[T](Func2 fn) at LiteDB. In this article we will have a closer look at LiteDB, a . If log file growth is a problem, try calling db. Dispose() 於 LiteDB. Accompanies LiteDB issue 1573. May 8, 2020 · I want this as i have a long running process and want to use a timer to backup my database every hour without shutting the database/application down. LiteDB has "Include" option (which is called before Sep 23, 2019 · LiteDB 数据库更新数据问题. Threading; using static LiteDB. LiteDB was inspired by the MongoDB database and its API is very …. DeserializeObject(EntityMapper entity, Object obj, BsonDocument value) at LiteDB. A collection is a group of related documents that have a set of shared indices. Code to Reproduce var t = 0; while (true) {if (testDb == null) testDb = new LiteDatabase("datas\test. In shared mode, any other can read but can't open new transactions. Forms 5 . MoveNext() 於 System. CloseDatabase() 於 LiteDB. What is db. 66 KB. for (var i = 0; i < 100_000; i++) {. Checkpoint method, which should commit the changes to the file. Reload to refresh your session. g. how I can create a database without the log file? the c# code is: var db = new LiteDatabase(@"DB. SharedEngine. Beginning with version 3. net core. This article is an overview about my database project LiteDB - a small, fast and free embedded . cs. BSON is a binary representation of JSON with additional type information. SET <key0> = <exprValue0> [,<keyN> = <exprValueN>] | <newDoc>. This value can then be added (or mapped) into a BsonDocument (and stored): var bValue = LiteDB. 3 and the latest from repo, Windows 10/8. db"); asakl added the question label on Feb 10, 2020. LINQ expressions (lambda functions) can be used to create fluent API query in your C# code. BasePage. SharedDataReader. collection is the name of the collection where the documents will be inserted. 11. 0 the test takes 400 seconds. ExtendPage'. Threading; #if NETFRAMEWORK using System. Create a new folder inside of your models folder and name it Repos (short for repositories), inside of that folder create a new file named BlogRepo. Engine; using System; using System. DbEngine. Azure blob storage is another service and deliver file as request. Advantages include: BSON. db). Or, if you prefer, you can install via NuGet: Install-Package LiteDB. It works by using pickle to serialize arbitrary Python classes, and allows Jan 24, 2019 · Sign in with your Check Point UserCenter/PartnerMap account to access more great content and get a chance to win some Apple AirPods! If you don't have an account, create one now for free! Abdullahi_Said Jun 27, 2019 · 1. The database is also little used as it is a test server. The only thing I changed in my code is that I removed the transaction when saving the whole file. Max * page size (4096) = 16TB for version 4. System. 5 / NETStandard 1. LiteDB is plain file database and has no running service to access data. Lock() method. After receiving the data, database connection closes. Linq; using System. 3/2. Enumerable. More examples and online shell at LiteDB. from litedb import DiskDatabase, MemoryDatabase memory_db About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Apr 6, 2020 · Version Which LiteDB version/OS/. , use Polly). Increase DeleteEveryXSeconds e. Examples Synchronize data in the default database: CHECKPOINT; Synchronize data in the specified database: CHECKPOINT file_db; Abort any in-progress transactions to synchronize the data: FORCE CHECKPOINT; Syntax Checkpoint Nov 13, 2020 · Therefore I have created a MemoryStream that I want to copy to the file. We will discover the advantages of LiteDB and why it is a viable candidate for your next project. If you are running in a web environment, make sure that your IIS user has write permission to the data folder. LiteDatabase db; LiteCollection<Contact> list; And don't forget to import the LiteDB namespace to your winform. IO; using System. LockService. It supports basic querying capabilities like filtering, sorting, and projection. UPDATE <collection>. You'll just have to catch and retry (e. FindAll() statement returns 0 results. An open source MongoDB-like database with zero configuration. Checkpoint() manually once in a while. If I try to change a value LiteDB Studio tells me that the document was not found. Maximum LiteDB will lock second concurrency instance until first release (by Dipsose). We did the following to resolve it. Threading. Nekromateion closed this as completed on Sep 12, 2021. Creating or connecting to liteDB instances is incredibly easy. To open a new tab : Right click table --> open new tab. 10) on port 8083. PS: you really made a good good job with LiteDb!! Feb 10, 2020 · when I create a database (let's call him "DB"), it's created me a file DB. There is quick tutorial section "DbRef for cross references" on LiteDB webpage how one can realize it. 0) But today I get error: site not work, restart iis does not help Rebuild operation requires no log file - run Checkpoint before continue Oct 18, 2017 · Introduction. FileStorage. 以下凑字数，汗，还限制字数 Feb 13, 2020 · This new memory stream contains changes only and when get 1000 pages, this file are copied into original data file. Source code hosted on GitHub or Download Binary. Checkpoint(). Check Collation. Data recovery after write failure (WAL log file) Aug 12, 2018 · I added a TransactionService. Dispose(Boolean disposing) 於 LiteDB. net core 3. Edit 13/03/2020 : Seems to be stable now with 5. Nov 30, 2019 · Setting up LiteDB. EmptyPage' to type 'LiteDB. If you create a REST API, you should locate you datafile in same machine (local disk) that are running your IIS. The Check Point Security Gateway uses NAT to: Forward traffic arriving on TCP port 8081 to Web1 on port 80. SHARED - When the first client calls BeginTrans() data file locks to shared mode. cmdlet. Stacktrace. Checkpoint() at Storage. Jan 29, 2023 · LiteDB v 5. Checkpoint() after clearing dirty pages and moving them to disk to clear the excess clean cached data. The latest version, at the time of publication, is version 5. You switched accounts on another tab or window. asakl changed the title [QUESTION] LiteDB-log [QUESTION] disable creation of LiteDB-log on Feb 10, 2020. 0. 9 KB. You signed out in another tab or window. Describe the bug A clear and concise description of what the bug is. It looks like it is not checking each value. NET NoSQL Document Store in a single data file - mbdavid/LiteDB // must checkpoint. Complete(LiteTransaction trans) at LiteDB. Get the problem database file "Programs. Keyworks and function names are case-insensitive. Just copy LiteDB. org. JsonSerializer. LiteDB stores documents in the BSON (Binary JSON) data format. Concurrent; using System. Collation Collation { get; } Gets the Timeout pragma for the current datafile (can only be changed with a rebuild). LiteDB ENSURE: request page must be less or equals lastest page in data file System. Query Language: LiteDB provides a simple and lightweight query language for querying documents using LINQ syntax. Try to play a little bit with the parameters. Linq. 1. NET 6 and 8 (Happens in both) Describe the bug Here I insert multiple entities using InsertBulk in a loop. Source: mbdavid/LiteDB#725 For now I'm trying to keep the repositories as transient and use the Database. JsonSerializer to deserialize a string to a BsonValue. col. Click the run button (top menu) or Press F5 to run the SQL query. Deserialize(Type type, BsonValue value) at LiteDB. using(var db = new LiteDatabase(@"C:\Temp\MyData. LiteDB v5 uses BsonExpressions, which are expressions that can be directly applied to a BsonDocument. If the folder contains an existing liteDB instance, the data from the disk will be loaded into the database upon construction. litedb file is >4GB. Studio 1. My -log. This checkpoin also occurs when you close database. CollectionPage. Code to Reproduce It does also not work with the LiteDB Studio. How does LiteDB Cache work? Is it faster to keep a Connection Open for Multiple queries? The Chache is per db Instance. Contributor. May 9, 2019 · 1. Please let me know if it is fine to send it by email. 18 Windows 10 . db and DB-log. NET NoSQL Document Store in a single data file. x, PageSize is 8196. The LiteDB team is excited to announce that we have added two new maintainers to the project. Jan 6, 2024 · With LiteDb I noticed in their doc LiteDatabase as a core object handling connection to the db is intstantiated and disposed immediately. To toggle db connection : Right click the DB --> select connect or disconnect. 1, net45; Same with LiteDB. Linq; using LiteDB. Simplistic databases that use locks always end up with deadlock victims when under load. 1 branch version. Aug 11, 2016 · edited. Data is committed by asynchronously writing dirty pages as dictated per checkpoints. Click Connect. FindAll(). This affects how the engine opens the data file. Insert(new TestData { Name = "name" + (t++) }); Dec 6, 2016 · at LiteDB. 15 Android 11-12 Xamarin. Serverless NoSQL Document Store. NET in a single datafile - and now it's in new version 4. Update(String colName, IEnumerable1 docs) at LiteDB. If this doesn't work well then I'll either change Apr 6, 2021 · at LiteDB. In LiteDB v5, pragmas are variables that can alter the behavior of a datafile. 另外还有时候会关闭不了窗体，干。. 85 KB. Constants; namespace LiteDB. lbnascimento In LiteDB v5, pragmas are variables that can alter the behavior of a datafile. They are stored in the header of the datafile. 2 console app as a windows service) and im using it just to keep track of the e-mails that im sending. dll into your Bin folder and add it as Reference. Added a thread specifically for calling 'Checkpoint ()'. } also found more examples of handling it the same way. 20 management server. Snapshot Which LiteDB version/OS/. Reserved for version control by the user. Create(); using(var db = new LiteDatabase(stream) {. Oct 2, 2023 · The Azure load balancer is set up with an inbound NAT rule that forwards all HTTP (port 80) traffic arriving at that public address to the Check Point gateway's external private address (10. Checkpoint. 关于 LiteDB不能更新或者更新时报错. If you can test, try use 5. EnterTransaction() The only static instance of LiteDb is created like this: var db = new LiteDbExt($"Filename={path}") Did I, by chance, misunderstand something in how I must manage concurrency in LiteDb? Your help would be really appreciated. Calling Rebuild() on a LiteDatabase instance results in a SynchronizationLockException. 97 KB. The docs on the website give an example of creating LiteDatabase in a using block: using (var db = new LiteDatabase LiteDB offers 2 types of connections: Direct and Shared. ApplicationException: Object synchronization method was called from an unsynchronized block of code 於 System. When you don’t want to go through the hassle of setting up an SQL database but don’t want to rely on JSON data storage, liteDB is the solution. Install it via NuGet or just copy the DLL to your bin project folder. Engine; using static LiteDB. 1239 Hello, We've recently launched a brand new version of our app and we realized some crashing reports in AppCenter when first trying to open a LiteDb instance. Feb 6, 2017 · I am using a LiteDatabase instance from multiple threads (as LiteDB advertises thread-safety). ToList(); Expected behavior Mar 9, 2020 · System. using LiteDB; Oct 20, 2022 · LiteDB - A . Recognizing the need for a lightweight, high-performance, and easy-to-use database system that could handle complex data types, David set out to create a tool that would cater to a wide range of applications. lockingsessionid, subquery1. Code to Reproduce List<Items> itemsList = itemsCollection. After a checkpoint, your datafile contains all your data an log file are clear. You can insert, update, delete or query your database using a very similar SQL relational language. Sep 8, 2017 · In v3. ReleaseMutex() 於 LiteDB. LiteCollection`1. operation FROM dleobjectderef_data, (SELECT lockedobjid, lockingsessionid, operation FROM locknonos) subquery1 WHERE Used for create a LiteDB instance and use all storage resources. Apr 8, 2020 · at LiteDB. We are now working on more frequent releases, better stability and performance, and better communication with the community. Jun 18, 2020 · Which is called by: LiteDB. First run: psql_client cpm postgres -c "SELECT objid, name, dlesession, cpmitable, subquery1. Feb 20, 2024 · This command will copy the data from the log file to its respective position in the data file (. db. BsonMapper. LiteDB supports SQL-like language for data and structure manipulations. WriteTransaction[T](String colName, Boolean addIfNotExists, Func2 action) at LiteDB. Code to Reproduce Oct 1, 2019 · Im implementing the LiteDB in a very small project (. On checkpoint (or recovery) if CRC are not valid (any page corrupted) all transactions after this will be Feb 25, 2020 · Affter called ILiteCollection. 4, it takes 98 seconds. 5 and NETStandard 2. Add a method that takes a filename or a stream that does the following: Disable auto checkpoint. It does allocate more RAM that requires GC, but if you’re churning less than 500 records per second in and out of your database, you won’t notice a difference. Checkpoint() method causes a deadlock. NET embedded NoSQL database. litedb file is only 8KB, whilst the test-log. NET C# managed code (compatible with . Select a database file. Collections. Generic; using static LiteDB. Simple API, similar to MongoDB. x version. Maximum amount of time (in seconds) that the engine waits for a shared resouce to be unlocked. Snapshot. This will be a practical, hands-on guide that should answer the following questions: what are the differences between SQLite and LiteDB on a high level? what can LiteDB do for me that SQLite cannot, and vice versa? when to use SQLite, and when to use LiteDB? how easy is it to set up LiteDB compared to SQLite in a new C# According to the developer, if the threads are in the same process then we should just reuse the same LiteDatabase instance. LiteDB is a small, fast and lightweight . Documents are a schema-less data structure. Diagnostics; using System. Dec 23, 2016 · As I understand it, v3 is designed to work efficiently under a multi-threaded process where multiple threads may read and write data concurrently. This is possible because, if a crash happens and the data is lost, it can be regenerated by replaying the transaction log. LiteDB is a serverless database, so there is no installation. ctor(String rootPath) There is no other access to the database at the time. Constants. Nov 27, 2020 · In this article, we will talk about you can use LiteDB within PowerShell and potential use cases! Installing LiteDB in PowerShell Available as a NuGet package, LiteDB is easily installable as a package using the Install-Package. The default method by which SQLite implements atomic commit and rollback is a rollback journal . I do not want to attach 12Mb zip, also not that public. Every key is the attribute name in the document and the LiteDB - A . Jan 16, 2024 · I can read all data but it is not possible to change values. using LiteDB. I didn't have a PDB available at that time but I do now so I'll post a proper stacktrace and maybe provide a repro next time the program crashes. Engine. LiteDB stores documents in collections. No changes to the database are made. InvalidCastException: Spe Gets or sets the Checkpoint pragma for the current datafile. Commit() at LiteDB. CopyTo(dest); LiteDB supports SQL-like language for data and structure manipulations. All SQL commands are supported in new LiteDB. Jun 19, 2020 · LiteDb is a No-Sql engine, it stores data as blobs of JSON. 269 lines (203 loc) · 8. I followed the source code until IndexService. Direct: The engine will open the datafile in exclusive mode and will keep it open until Dispose(). // insert some values. My goal is NOT ONLY the requested entity but also referenced ones. 100% C# code for . ENSURE(Boolean conditional, String message) at LiteDB. 4. Generic; using System. Think LiteDB as a simple FileStream class (that works with local file) with "super-powers" :) Nov 16, 2022 · LiteDB is a document store that gets saved into a single file. Checkpoint() doing? Do I have to call it from time to time? It is writing the Log to the database file. Globalization; using System. db")) {. BSON is a fast and simple way to serialize documents in binary format. In contrast, Microsoft SQL Server uses Structured Query Language (SQL) for querying relational data. Principal; #endif namespace LiteDB { public class SharedEngine : ILiteEngine { private readonly EngineSettings _settings Feb 24, 2020 · LiteDB 5. InvalidCastException: Unable to cast object of type 'LiteDB. 实体类正确的写法：. If you read the file manual that you linked to, the top of the page says "This documentation is valid only for v4. This command can be called by Checkpoint method too. <ToEnumerable>b__27_2(BsonDocument x) You signed in with another tab or window. We are excited to see where this project goes and are looking forward to working with the community to make LiteDB the best it 59 lines (50 loc) · 1. NET Standard 2. About v5 is same concurrency suggestion. NET document database. The datafile cannot be opened by another process. Dec 6, 2019 · You can use the LiteDB. WalIndexService. (REQUIRED) Latest version from master, commit 6c0886e. 5/ windows 10 1909/ . I faced this exception a bunch of times, then delete the db file and start again, but i noticed now, that i only have this problem when i read the file on the LiteDB Studio. 0 version and from time where start (LiteDB 5. 48 lines (41 loc) · 1. Version Which LiteDB version/OS/. NET NoSQL Document Store in a single data file - mbdavid/LiteDB We would like to show you a description here but the site won’t allow us. . Deserialize(jstring); Just to add an interesting tidbit: You can also deserialize from a (stream)reader directly, like a http request body! LiteDB - A . NET NoSQL Document Store in a single data file - mbdavid/LiteDB LiteDB is great! Has easy encryption out of the box, and performance is about as good as SQLite (at least unindexed). NET NoSQL Document Store for . UPDATE. to 10, and you get different behaviour on Windows (locking instead of null Nov 22, 2021 · Read the fine manual - it says theoretically UInt. Collections are analogous to tables in Oct 8, 2020 · The recommended way to use LiteDB is to keep the datafile open throughout the lifetime of your application and to call db. AccessControl; using System. Using the following (see also sample code in #1259 ):-. So please try to update a field in the Apr 24, 2023 · LiteDB was developed by Mauricio David, a software engineer from Brazil, as a solution to the limitations of existing embedded databases. This is the recommended mode because it’s faster and cachable. But I found a minor bug in LiteDB when testing your example: DropCollection are not removing start index page when has no documents inside Jun 27, 2019 · 1. For in-memory databases this statement will succeed with no effect. LiteDB implement 3 modes of locking: UNLOCKED - No locks on data file - any client can read or write data. Transactions commit by synchronously writing to the transaction log, which always happens before any data is written. There are advantages and disadvantages to using WAL instead of a rollback journal. It's the database connection /// </summary> public partial class LiteDatabase : ILiteDatabase { #region Properties private readonly ILiteEngine _engine; private readonly BsonMapper _mapper; private readonly bool _disposeOnClose; /// <summary> /// Get current instance of BsonMapper Jul 3, 2024 · Download LiteDB for free. 0 in a single DLL (less than 450kb) Thread-safe. ReadPage[T](UInt32 pageID, FileOrigin& origin, Int64& position, Int32& walVersion) at LiteDB. Apr 23, 2020 · liteDB is the perfect tool for small projects where performance is of less concern than ease of use and clean, Pythonic APIs. That means that all your data resides in a single file. Find. 1. There are indexes, like you found out, but those indexes are on the JSON level, on the top level, the same as searches. Security. 4 the test with the transaction takes 7 seconds. Each document stores both its data and its structure. net core 2. This crash occured when attempting to insert a document on LiteDB 2. Apparently, for 5. WhereSelectEnumerableIterator Apr 19, 2019 · My first question is will the following be possible with LiteDB: Up to 20 instances of the program are accessing the database file over the network roughly at the same time and recevieve the data. ACID with full transaction support. ReadPage[T](PageBuffer buffer) at LiteDB. If you remember the good old times’ citation needed, you might remember SQL Server Compact , a single file database based on the SQL Server. (REQUIRED) 5. Oct 18, 2016 · LiteDB stores the cross-referenced entities perfectly fine, but problem comes when I am trying to find/load entities back. When you don't want to go through the hassle of setting up an SQL database but don't want to rely on JSON data storage, liteDB is the solution. We will also explore what are the differences between a NoSQL and a classical SQL database are and May 22, 2023 · All works fine for some years from LiteDB 3. When I remove the transaction and run the same test in LiteDB 3. using System; using System. The following structure defines the SQL update syntax in LiteDB. NET framework version are you using. Dec 21, 2023 · Expected behavior. Nekromateion added the question label on Sep 12, 2021. db. Describe the bug When fresh install of android application, even though there are documents in the database, the . So if you dispose the db Instance the caching restarts. DiskDatabase instances do require that a folder path be specified for database storage. Aug 3, 2023 · According to the LiteDB docs, writes are protected by a lock internally. LiteTransaction. This new version removes log file (log data are inserted inside same data file). The Problem is that the changes made to the database are not written to the stream. I'm still updating documentation. Animha. NET NoSQL embedded database. In the documents, the value of a field can be any of the BSON data types, including other documents, arrays, and arrays of documents. This solves the problem for now but I think enforcing users to use the Bulk methods is a far better solution, in fact, I believe you can remove the Insert, Update and Upsert array overloads and force people to use the InsertBulk, the newly proposed UpsertBulk and Jun 23, 2020 · Making sure it is disposed on shutdown is good practice, but technically not necessary. Feb 18, 2020 · Call _db. GetCollection(). Checkpoint(); // file still large than 5mb (even with only 1 Jun 24, 2024 · LiteDB is a library that helps you work with c# embedded database, you can also use litedb . Up to 20 instances of the program are accessing the Mar 22, 2015 · Concurrency is guaranteed by locking your data file using FileStream. 0 (2010-07-21), a new "Write-Ahead Log" option (hereafter referred to as "WAL") is available. Mutex. So unless you can bring your condition to the top level, the engine will have to unpack every single JSON object to get the managed array to apply your filter on Sep 12, 2021 · Nekromateion commented on Sep 12, 2021. db file grows in size (10GB+) after several thousand insert/upsert actions. dk dl zh tm dx ru zh ax al pk
