Patterns interview questions

1. A.an optimization that tests a condition before and after acquiring a lock to avoid synchronization on the common already-initialized path
2. B.restricting access to an object to a single thread so it needs no synchronization because nothing else can touch it
3. C.a facility giving each thread its own private copy of a variable, eliminating sharing-related contention for per-thread data
4. D.designing objects so their state never changes after construction, making them inherently safe to share across threads without locks

Answer + AI explanation with Pro

1. A.Thread-local storage
2. B.Immutability
3. C.Thread confinement
4. D.Double-checked locking

Answer + AI explanation with Pro

1. A.Immutability — an optimization that tests a condition before and after acquiring a lock to avoid synchronization on the common already-initialized path
2. B.Immutability — designing objects so their state never changes after construction, making them inherently safe to share across threads without locks
3. C.Immutability — a facility giving each thread its own private copy of a variable, eliminating sharing-related contention for per-thread data
4. D.Immutability — restricting access to an object to a single thread so it needs no synchronization because nothing else can touch it

Answer + AI explanation with Pro

1. A.a facility giving each thread its own private copy of a variable, eliminating sharing-related contention for per-thread data
2. B.restricting access to an object to a single thread so it needs no synchronization because nothing else can touch it
3. C.an optimization that tests a condition before and after acquiring a lock to avoid synchronization on the common already-initialized path
4. D.designing objects so their state never changes after construction, making them inherently safe to share across threads without locks

Answer + AI explanation with Pro

1. A.Immutability
2. B.Double-checked locking
3. C.Thread confinement
4. D.Thread-local storage

Answer + AI explanation with Pro

1. A.Thread confinement — restricting access to an object to a single thread so it needs no synchronization because nothing else can touch it
2. B.Thread confinement — designing objects so their state never changes after construction, making them inherently safe to share across threads without locks
3. C.Thread confinement — an optimization that tests a condition before and after acquiring a lock to avoid synchronization on the common already-initialized path
4. D.Thread confinement — a facility giving each thread its own private copy of a variable, eliminating sharing-related contention for per-thread data

Answer + AI explanation with Pro

1. A.a facility giving each thread its own private copy of a variable, eliminating sharing-related contention for per-thread data
2. B.designing objects so their state never changes after construction, making them inherently safe to share across threads without locks
3. C.an optimization that tests a condition before and after acquiring a lock to avoid synchronization on the common already-initialized path
4. D.restricting access to an object to a single thread so it needs no synchronization because nothing else can touch it

Answer + AI explanation with Pro

1. A.Thread-local storage
2. B.Thread confinement
3. C.Immutability
4. D.Double-checked locking

Answer + AI explanation with Pro

1. A.Double-checked locking — restricting access to an object to a single thread so it needs no synchronization because nothing else can touch it
2. B.Double-checked locking — designing objects so their state never changes after construction, making them inherently safe to share across threads without locks
3. C.Double-checked locking — an optimization that tests a condition before and after acquiring a lock to avoid synchronization on the common already-initialized path
4. D.Double-checked locking — a facility giving each thread its own private copy of a variable, eliminating sharing-related contention for per-thread data

Answer + AI explanation with Pro

1. A.designing objects so their state never changes after construction, making them inherently safe to share across threads without locks
2. B.an optimization that tests a condition before and after acquiring a lock to avoid synchronization on the common already-initialized path
3. C.restricting access to an object to a single thread so it needs no synchronization because nothing else can touch it
4. D.a facility giving each thread its own private copy of a variable, eliminating sharing-related contention for per-thread data

Answer + AI explanation with Pro

1. A.Double-checked locking
2. B.Thread-local storage
3. C.Immutability
4. D.Thread confinement

Answer + AI explanation with Pro

1. A.Thread-local storage — designing objects so their state never changes after construction, making them inherently safe to share across threads without locks
2. B.Thread-local storage — an optimization that tests a condition before and after acquiring a lock to avoid synchronization on the common already-initialized path
3. C.Thread-local storage — restricting access to an object to a single thread so it needs no synchronization because nothing else can touch it
4. D.Thread-local storage — a facility giving each thread its own private copy of a variable, eliminating sharing-related contention for per-thread data

Answer + AI explanation with Pro