Learning new development processes can be difficult, but switching to Agile doesn’t need to be complicated. Explore the theories behind Agile and learn how to make it work for you. In Agile Software Development Succinctly, author Stephen Haunts will guide you to a fuller understanding of Agile, its advantages and disadvantages, and how to get the most out of it.
A 9-Hour Go Course for Beginners
⭐️ Contents ⭐️
(0:00:00) Intro
(0:03:17) Ch 1. Why write Go?
(0:27:39) Ch 2. Variables
(0:51:11) Ch 3. Functions
(1:16:58) Ch 4. Structs
(1:34:36) Ch 5. Interfaces
(2:00:26) Ch 6. Errors
(2:22:01) Ch 7. Loops
(2:48:21) Ch 8. Slices
(3:39:54) Ch 9. Maps
(4:06:19) Ch 10. Advanced functions
(4:31:03) Ch 11. Pointers
(4:48:02) Ch 12. Local development
(5:31:43) Ch 13. Channels & concurrency
(6:07:38) Ch 14. Mutexes
(6:30:56) Ch 15. Generics
(6:38:38) Ch 16. Quiz
(6:43:13) P1. RSS aggregator project
(6:53:43) P2. Chi router
(7:11:37) P3. Postgres database
(7:39:10) P4. Authentication w/ API keys
(8:18:28) P5. Many to many relationships
(8:39:13) P6. Aggregation worker
(9:05:28) P7. Viewing blog posts
Here’s a summary of what’s new in this preview release:
Its value MUST be a number containing a NumericDate value.
A JSON numeric value representing the number of seconds from 1970-01-01T00:00:00Z UTC until the specified UTC date/time, ignoring leap seconds. This is equivalent to the IEEE Std 1003.1, 2013 Edition [POSIX.1] definition "Seconds Since the Epoch", in which each day is accounted for by exactly 86400 seconds, other than that non-integer values can be represented. See RFC 3339 [RFC3339] for details regarding date/times in general and UTC in particular.
USE [master]
GO
ALTER DATABASE [testdb2]
ADD FILEGROUP [InMemory_InMemory] CONTAINS MEMORY_OPTIMIZED_DATA
GO
ALTER DATABASE [testdb2]
ADD FILE ( NAME = N'InMemory_InMemory', FILENAME = N'D:\SQL_Data\MSSQL11.MSSQLSERVER\MSSQL\DATA\InMemory_InMemory' )
TO FILEGROUP [InMemory_InMemory]
GO -- It is not a Memory Optimized
CREATE TABLE tblNormal
(
[CustomerID] int NOT NULL PRIMARY KEY NONCLUSTERED,
[Name] nvarchar(250) NOT NULL,
CustomerSince DATETIME not NULL
INDEX [ICustomerSince] NONCLUSTERED
)
-- DURABILITY = SCHEMA_AND_DATA
CREATE TABLE tblMemoryOptimized_Schema_And_Data
(
[CustomerID] INT NOT NULL
PRIMARY KEY NONCLUSTERED HASH WITH (BUCKET_COUNT = 1000000),
[Name] NVARCHAR(250) NOT NULL,
[CustomerSince] DATETIME NOT NULL
INDEX [ICustomerSince] NONCLUSTERED
) WITH (MEMORY_OPTIMIZED = ON, DURABILITY = SCHEMA_AND_DATA)
-- DURABILITY = SCHEMA_ONLY
CREATE TABLE tblMemoryOptimized_Schema_Only
(
[CustomerID] INT NOT NULL
PRIMARY KEY NONCLUSTERED HASH WITH (BUCKET_COUNT = 1000000),
[Name] NVARCHAR(250) NOT NULL,
[CustomerSince] DATETIME NOT NULL
INDEX [ICustomerSince] NONCLUSTERED
) WITH (MEMORY_OPTIMIZED = ON, DURABILITY = SCHEMA_ONLY) Indexes on character columns that do not use a *_BIN2 collation are not supported with indexes on memory optimized tables.
bit, tinyint, smallint, int, bigint, money, smallmoney, float, real, datetime, smalldatetime, datetime2, date, time, numberic, decimal, char(n), varchar(n) ,nchar(n), nvarchar(n), sysname, binary(n), varbinary(n), and Uniqueidentifier
set statistics time off
SET STATISTICS IO Off
set nocount on
go
-----------------------------
Print 'insert into tblNormal'
DECLARE @start datetime = getdate()
declare @insertCount int = 100000
declare @startId int = 1
declare @customerID int = @startId
while @customerID < @startId + @insertCount
begin
insert into tblNormal values (@customerID, 'Test', '2013-01-01T00:00:00')
set @customerID +=1
end
Print DATEDIFF(ms,@start,getdate());
go
-----------------------------
Print 'insert into tblMemoryOptimized_Schema_And_Data'
DECLARE @start datetime = getdate()
declare @insertCount int = 100000
declare @startId int = 1
declare @customerID int = @startId
while @customerID < @startId + @insertCount
begin
insert into tblMemoryOptimized_Schema_And_Data values (@customerID, 'Test', '2013-01-01T00:00:00')
set @customerID +=1
end
Print DATEDIFF(ms,@start,getdate());
Go
-----------------------------
Print 'insert into tblMemoryOptimized_Schema_Only'
DECLARE @start datetime = getdate()
declare @insertCount int = 100000
declare @startId int = 1
declare @customerID int = @startId
while @customerID < @startId + @insertCount
begin
insert into tblMemoryOptimized_Schema_Only values (@customerID, 'Test', '2013-01-01T00:00:00')
set @customerID +=1
end
Print DATEDIFF(ms,@start,getdate());
Go insert into tblNormal 36423 insert into tblMemoryOptimized_Schema_And_Data 30516 insert into tblMemoryOptimized_Schema_Only 3176
set nocount on print 'tblNormal' set statistics time on select count(CustomerID) from tblNormal set statistics time off go print 'tblMemoryOptimized_Schema_And_Data' set statistics time on select count(CustomerID) from tblMemoryOptimized_Schema_And_Data set statistics time off go print 'tblMemoryOptimized_Schema_Only' set statistics time on select count(CustomerID) from tblMemoryOptimized_Schema_Only set statistics time off go
tblNormal SQL Server Execution Times: CPU time = 46 ms, elapsed time = 52 ms. tblMemoryOptimized_Schema_And_Data SQL Server Execution Times: CPU time = 32 ms, elapsed time = 33 ms. tblMemoryOptimized_Schema_Only SQL Server Execution Times: CPU time = 31 ms, elapsed time = 30 ms.
تو این ویدیو اول سراغ تاریخچه معماری رفتیم و بعد به این رسیدیم که چرا توی یه جنگلی از اسامی معمارگونه گیر کرده ایم و سعی داریم از این همه اسامی و الگو‌ها و معماری‌های مختلف رو طبقه بندی کنیم.
02:30 History of the Software Architecture
16:00 Architecture vs Design
19:00 Software Architecture vs Software Design
Bringing WebAssembly to the .NET Mainstream - Steve Sanderson, Microsoft
Many developers still consider WebAssembly to be a leading-edge, niche technology tied to low-level systems programming languages. However, C# and .NET (open-source, cross-platform technologies used by nearly one-third of all professional developers [1]) have run on WebAssembly since 2017. Blazor WebAssembly brought .NET into the browser on open standards, and is now one of the fastest-growing parts of .NET across enterprises, startups, and hobbyists. Next, with WASI we could let you run .NET in even more places, introducing cloud-native tools and techniques to a wider segment of the global developer community. This is a technical talk showing how we bring .NET to WebAssembly. Steve will demonstrate how it runs both interpreted and AOT-compiled, how an IDE debugger can attach, performance tradeoffs, and how a move from Emscripten to WASI SDK lets it run in Wasmtime/Wasmer or higher-level runtimes like wasmCloud. Secondly, you'll hear lessons learned from Blazor as an open-source project - challenges and misconceptions faced bringing WebAssembly beyond early adopters. [1] StackOverflow survey 2021
قسمت 5ام از سری ویدیو‌های کانکارنسی داریم کم کم به انتهای ویدیو‌ها میرسیم و در این ویدیو درمورد بکگراند ترد‌ها و فرگراند ترد‌ها صحبت کردیم، به طور کامل فضای تسک و ترد پول رو بررسی و باز کردیم و در انتها یه نگاهی هم به فضای async, await انداختیم که در ادامه ویدیو‌ها بیشتر صحبت میکنیم.
0:00 last session
03:00 Background and foreground thread
06:50 CLR
07:19 Thread Pool
11:00 Task
13:30 Task Result
16:40 Long Running Tasks
بعد از اینکه مفاهیم معماریمون یکی شد، رفتیم سراغ باور‌های غلطی و یا استدلال‌های غلطی که داریم، مثل اینکه نتورک و یا سرویس خارجی همیشه سالم و درست کار میکنند. و با الگو هایی مثلا Circuit Breaker و Retry Pattern آشنا شدیم و در انتها این هارو با پکیج Polly پیاده سازی کردیم.
02:00 Fallacy 1- The Network is Reliable
05:30 Retry Pattern
06:33 Circuit Breaker Pattern
13:00 Circuit Breaker Pattern Flow
18:00 Circuit Breaker Pattern State Machin
26:00 Implement Retry and Circuit breaker pattern with Polly
Understanding Transactions in SQL
