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The bridge networking driver is the first driver on our list. It’s simple to understand, simple to use, and simple to troubleshoot, which makes it a good networking choice for developers and those new to Docker. The bridge driver creates a private network internal to the host so containers on this network can communicate. External access is granted by exposing ports to containers. Docker secures the network by managing rules that block connectivity between different Docker networks.
The built-in Docker overlay network driver radically simplifies many of the complexities in multi-host networking. It is a swarm scope driver, which means that it operates across an entire Swarm or UCP cluster rather than individual hosts. With the overlay driver, multi-host networks are first-class citizens inside Docker without external provisioning or components. IPAM, service discovery, multi-host connectivity, encryption, and load balancing are built right in. For control, the overlay driver uses the encrypted Swarm control plane to manage large scale clusters at low convergence times.
The macvlan driver is the newest built-in network driver and offers several unique characteristics. It’s a very lightweight driver, because rather than using any Linux bridging or port mapping, it connects container interfaces directly to host interfaces. Containers are addressed with routable IP addresses that are on the subnet of the external network.
As a result of routable IP addresses, containers communicate directly with resources that exist outside a Swarm cluster without the use of NAT and port mapping. This can aid in network visibility and troubleshooting. Additionally, the direct traffic path between containers and the host interface helps reduce latency. macvlan is a local scope network driver which is configured per-host. As a result, there are stricter dependencies between MACVLAN and external networks, which is both a constraint and an advantage that is different from overlay or bridge.
try {
int i=0;
string s = "hello";
i = Convert.ToInt32(s);
} catch (Exception ex)
{
Console.WriteLine("Error");
}
Console.WriteLine("I am here!"); public static int GetMyInt()
{
try {
for (int i=10;i>=0;i--)
Console.WriteLine(10/i);
return 1;
} catch
{
Console.WriteLine("Error!");
}
finally {
Console.WriteLine("ok");
}
Console.WriteLine("can you reach here?");
return -1;
} public static int GetMyInt()
{
try {
for (int i=10;i>=1;i--)
Console.WriteLine(10/i);
return 1;
} catch
{
Console.WriteLine("Error!");
}
finally {
Console.WriteLine("ok");
}
Console.WriteLine("can you reach here?");
return -1;
} public int GetUserId(string nickname)
{
SqlConnection connection = new SqlConnection(...);
SqlCommand command = connection.CreateCommand();
command.CommandText = "select id from users where nickname like @nickname";
command.Parameters.Add(new SqlParameter("@nickname", nickname));
try {
connection.Open();
return Convert.ToInt32(command.ExecuteScalar());
}
catch(SqlException exception)
{
// some exception handling
return -1;
} finally {
if (connection.State == ConnectionState.Open)
connection.Close();
}
// if all things works, you can not reach here
} In the same time when first object-oriented languages were emerging, another concept inspired by general relativity and quantum mechanics was taking shape – actor model. In general terms, the Actor model was defined 1973. and was developed on a platform of multiple independent processors in a network. Similar to the object-oriented approach, this essentially mathematical model, revolved around the concept of actors. An actor is the smallest structural unit of Actor model, and just like objects, they encapsulate data and behavior. In difference to objects, however, actors communicate with each other exclusively trough messages. Messages in actors are processed in a serial manner. According to the full definition of actors, they can do three things:
This web app allows you to create a visual representation of your BenchmarkDotNet console results. You can conveniently copy the generated chart to your clipboard, save it as a PNG image, or share it through a URL.
There is a lot of promise in bringing Blazor goodness to WPF desktop apps. This would be a wonderful way to modernize WPF apps and share code better between web/desktop.
For .NET 6, we plan to no longer perform any form of harvesting to ensure that all assets we ship can be serviced. This means we're dropping anything older than:
Database collations
The default collation for a database can now be specified in the EF model.
This will flow through to generated migrations to set the collation when the database is created.
For example:
modelBuilder.UseCollation("German_PhoneBook_CI_AS"); 
My guess is that this could be part of a long-term strategy to retire the full .NET Framework , rather than bringing any real value to .NET Core or desktop applications.
